The 48 Limitless Aero Disc will come fully equipped with CeramicSpeed's industry-leading hybrid ceramic bearings, even in the freehub body.
Cairn E-Adventure 1.0 Rambler Edition
Cairn the Rambler Limited Edition offers adventure-ready refinements, revised geometry and Ekar performance.
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60 Day Ride Guarantee
PURPOSE
Learn More
CeramicSpeed clearly need little introduction. We were honoured when they approached us last year to work together for the LIMITLESS project. As you know, CeramicSpeed bearings are renowned for their low rolling resistance, and are chosen by the top international athletes and teams.
All CeramicSpeed Balls are of the highest quality Grade 3 Silicon Nitride, featuring the highest achievable surface finish and roundness. The quality of the balls is what determines the performance and lifetime of a bearing. The CeramicSpeed Balls feature unparalleled impact strength, smoothness, roundness and brittleness.
Cairn Offers Adventure-Ready Refinements, Revised Geometry and Ekar Performance with Limited Rambler Edition
Freedom to Ramble
Before the days of recycled inner tube bar bags, cold brew kimchi energy gels and impeccably curated Instagram accounts, the bike was a tool to get you places you just couldn’t get to by a car or train. Inspired by the stories, memories and adventures of yesteryear, we set out to create a bike that would recall these simpler times while leveraging the best of 21st century tech. With the Cairn E-Adventure Limited Rambler Edition, we created a light, fast and versatile gravel e-bike, born to explore and designed to open the door to adventures anywhere.
Freedom To Ramble
Before the days of recycled inner tube bar bags, cold brew kimchi energy gels and impeccably curated Instagram accounts, the bike was a tool to get you places you just couldn’t get to by a car or train. Inspired by the stories, memories and adventures of yesteryear, we set out to create a bike that would recall these simpler times while leveraging the best of 21st century tech. With the Cairn E-Adventure Limited Rambler Edition, we created a light, fast and versatile gravel e-bike, born to explore and designed to open the door to adventures anywhere.
All-New Geometry
With a pinch of inspiration from its big brother, the Cairn BRAVe, and a splash of the ‘Lower, Longer, Slacker’ geometry learnings that have made modern mountain bikes infinitely more capable, we created at bike that captures the adventurous spirit of gravel riding—the ability to jump on the bike and ride to far flung places and vistas.
All-New Geometry
With a pinch of inspiration from its big brother, the Cairn BRAVe, and a splash of the ‘Lower, Longer, Slacker’ geometry learnings that have made modern mountain bikes infinitely more capable, we created at bike that captures the adventurous spirit of gravel riding—the ability to jump on the bike and ride to far flung places and vistas.
Premium Build
For the Rambler Edition, we continue our partnership with Fazua, offering excellent range that is further bolstered by our Range Extension pack, giving riders the ability to carry multiple batteries for truly off-grid adventures. We have also teamed up with Campagnolo, utilizing the brand-new Ekar 13-speed drivetrain.
Combining the widest range of any mechanical gravel-specific groupset on the market with the assistance of the Fazua system, the Cairn E-Adventure Rambler Edition lets you hang up those walking boots because the bike is going to take you all the way to the top, climb after climb.
KEY FEATURES
The Fastest Wheelset Is The Sum Of The Fastest Parts
Frame Improvements
Committed to constantly improving bikes for riders at every opportunity, we’ve built on the improvements made to the V2 E-Adventure frame and introduced even more frame refinements in the Limited Rambler Edition.
To allow more flex in the seat post and create a more comfortable ride, we have further shortened the seat tubes, which has the additional benefit of decreasing stand over height of the bikes in all sizes. We have designed a slimmer forged chain stay yoke profile with smaller tube diameters, which increases vertical compliance whilst maintaining lateral stiffness for pedalling. For riders, these improvements reduce leg and knee fatigue.
See Full Details
Last but not least, we have decreased the down tube profile by roughly 25%, which reduces frame weight while also offering a more compliant front triangle, resulting in a softer ride and less hand fatigue for the rider.
Limitless Rims
Wind tunnel developed, features disc-specific, unidirectional T24/30 rims, offering 22.5mm internal and 35mm external widths, and a 48mm u-shape aero profile.
See Full Details
PATENTED LIMITLESS TECHNOLOGY
In order to create the most aerodynamic & stable shape for the tyre, a rim bed of 22.5mm is needed. With the tyre profile this creates, the ideal shape of the rim curves out to an external width of 35mm. To overcome the weight penalty associated with this, we use a (non-structural) low density expanding polymer insert, inside a channel carved out during pre-preg.
This is bonded to the carbon during the curing process, resulting in an exceptionally strong bond. The density of carbon is 1.6g per cubic centimetre, whereas the polymer insert weighs just 0.7g per cubic centimetre, resulting in a (rotational) mass loss of just over 50g per rim. This patented technology enables us to consider the limits of material properties, and smash right past them.
The Details
• Wind tunnel tested, aerodynamically optimised for 25-28c tyres.
• Disc-specific tubeless-ready profile.
• H-lock bead-seat up-kicks for easy and secure tubeless installation.
• Unidirectional T24/30 carbon fibre with 3K weave re-enforced spoke holes.
• Matt black base finished with matt white contrasting graphics.
Introducing Campagnolo Ekar; born on the mountain that gave the groupset its name and with which it shares unmistakable and authentic characteristics. Cima Ekar is a charmingly diverse little gravel paradise in the Venetian Prealps. It’s not the highest peak nor the steepest climb, and it's not a celebrated regularly on the Giro or the other big-name races. Instead, Ekar is a gateway to adventure, offering a test of skill, technique and fitness. The mountain and region begs to be explored with networks of broken roads, single track and trails pointing off in every direction.
Read More
The Ekar group set imbodies everything that has become synonymous with Campagnolo. It’s the lightest Gravel groupset on the market, while still durable with heat-treated carbon steel and nickel-chrome-satin surface treatment to reduce overall material wear and friction.
The groupset’s 13-speed 10 – 44 tooth cassette offers the widest mechanical gravel gearing range on the market with the smallest jumps between gears, an attribute that riders will appreciate several hours and several mountain passes into their ride.
Cairn have teamed up again with HUNT to bring a specific wheel fit for the rigours for which this bike was designed. The HUNT X Cairn E-Gravel Disc wheels have been developed specifically for the Cairn E-Adventure Rambler Edition and feature a steel axle and increased pawl contact area for a longer lasting hub. The wide 25mm internal Gravel X Wide rims offer better tyre profile and allow for lower pressures, increasing traction and comfort. Like all HUNT wheels, the set is 100% tubeless compatible and features the all-new N3W Campagnolo freehub body.
Geometry
Featuring all-new geometry, the Rambler Edition aims to bring the rider more control without taking away the lively and responsive feel we have all come to know and love from the E-Adventure and gravel bikes in general.
The steeper 74-degree seat tube angle allows for better climbing on rough terrain, giving you a more aggressive attacking position whilst maintaining the all-important rear wheel traction. Combined with the slacker 70-degree head angle and increased 75mm trail, descent characteristics are more predictable, stable and comfortable, empowering the rider to let off the brakes and push the bike further.
See Full Details
The net result of the geometry changes is a riding position that puts the rider more in the bike than perched on top, achieved by increasing the bottom bracket drop to 80mm whilst maintaining a stack height with manageable saddle-to-bar drop. All this also goes along way to bringing capability with the latest breed of Gravel suspension forks. Tech speak aside, we made the Rambler Edition more fun to ride.
Finally, we’ve responded to requests from many riders and introduced an extra small size to the E-Adventure range.
Fast, sprightly and confidence to push hard in the turns – this is what a good tyre should feel like!
See Full Details
Vittoria have the know how, they are one of the largest bicycle tyre manufactures in the world and the design and development that gores into the tyres is astonishing. The Terreno Dry tyres used on this bike feature 3 compounds and Graphene to deliver ultimate performance in a straight line and corners alike.
SPECIFICATION
Frame:
6061-T6 alloy with Top Tube integrated Fazua touch remote
Fork:
Full Carbon with Anything mounts on both legs (max tyre clearance 700x45c)
Wheels:
Hunt Gravel X Wide Rim, Hunt E-Gravel Hub, Pillar Triple Butted Spokes.
Tyres:
Vittoria Terrano Dry 700 x 38c
Handlebar:
Cairn Adventure 20 Degree Flare, 65mm Reach, 105mm Drop XS/S 42cm, M/L - 46cm, XL - 48cm
Stem:
Cairn Adventure 6061-T6 - XS/S/M - 70mm, L/XL - 90mm
Handlebar Tape:
Cairn Tacky Gravel 3mm
Crankset:
Miranda Delta Alloy w/ 44t Spider XS/S - 165mm, M/L - 170mm, XL - 175mm
Cassette:
Campagnolo Ekar 13 speed 10-44T
Chain:
Campagnolo Ekar 13 Speed
Shifters:
Campagnolo Ekar 13 Speed
Rear Mech:
Campagnolo Ekar 13 Speed
Brakes:
Campagnolo Ekar, hydraulic disc brake levers, 13-speed mechanical shifting
Rotors:
Campagnolo Ekar 160mm
Saddle:
Selle Italia X Base 143mm
Seat Post
Cairn Carbon Seat post 27.2mm 350mm
Thru Axles:
Cairn Alloy Thru Axle w/Removable Bottle Opener Handle
Other:
Removeable rear mudguard bridge
Weight:
14.3kg Medium w/Motor and Battery
FAZUA DRIVE
The lightest and most compact drive system in the industry!
For the E-Adventure Rambler we continued to partner with the amazing team at Fazua with their equally amazing Evation drive system. Its lightweight, integrated and natural pedal feel was exactly what we were looking for to complement our bikes. At only 4.6kg for the full system its helps to create a really lightweight ebike, furthermore the system has no mechanical resistance if not in use, so if the worst happens and you run out of battery it wont feel like riding a heavy bike through treacle like some other system. The battery its self though is just over 1kg and with the Cairn keg and cage you can easily carry another battery to further your exploration.
Ride 50 Street Drivepack and BB
All New Ride 50 Street Drivepack and BB from Fazua features refinements that take the base set by the Evation system to the next level. The new Drivepack features increased torque output, now putting out up to 58nm of torque, helping tackle those technical or steep climbs. New cooling fins are present to manage system temperature and gone is the bolted drivepack USB cover.
Read More
The Ride 50 Street BB unit sees the biggest changes, with new torque and cadence sensors increasing the sensitivity of the unit by 70%. This will allow the system to further smooth out that natural ride feel that the Fazua System has become known for. Almost a by-product of this additional data, it makes the Fazua system nearly 10% more efficient!
Energy 250x
The Energy 250x battery brings the final flourish of details to the build. The 250x offers the capability to turn your bike on and off from the Remote FX. No more dropping the Drive pack out to turn the system on and off.
A new cap on the charging port adds a nice touch and reduces maintenance in the future.
Three Different Riding Modes
Choose from three levels of assistance or pedal without any help, its that simple.
Read More
Gentle, constant and 100 watts* like a strong tailwind even at low rider power.
River
Progressive and very sporty mode, for a smooth riding experience! The strength of the support precisely follows your own power. Give a lot - and get a lot from the motor (max. 210 watts*)
Rocket
Aggressive assistance that helps you to tackle the steepest (max. 250 watts*)
*default settings
How To Use The Drive System
REVIEWS
Bike Magazine & Website Expert's View
2020 Cycling Weekly Editor's Choice
"The E-Adventure 1.0 is an incredibly likeable bike to ride. I can be pretty on the fence when it comes to e-bikes, preferring like many for my legs to be the main performance delivery system for my riding. But after the first ride I came away with the same sense of rewarded effort as if I had ridden a ‘normal’ gravel bike – but one that I managed to ride farther than my legs felt like they had ridden."
Cycling Plus First Ride
'Buy if you want a great gravel bike and like the idea of assistance with it.'
2021 Bicycling E-Bike Award
"With its impressively steady handling manners, reasonably smooth ride, and a plethora of mounts, the Cairn is best for going places—particularly on roads and paths less traveled."
Cycling News Recommends 4.5/5 Review
"Cairn has taken the already somewhat niche electric gravel bike concept, sprinkled a little adventure dust on it and come up with one of the most versatile e-bikes around."
Bike Rumour 2019 Editor's Choice Award
"The most interesting e-bike I rode in 2019, was an e-gravel bike from Cairn. Propelled by a Fazua pedal-assist powertrain in the downtube, it strikes the perfect balance of giving just enough support to make the climbs a bit easier without every feeling like you are being pulled along. Comparing this back to back with a standard gravel bike on the same on & off-road loop, my heartrate was always just as high riding the Cairn, just my speed up every climb was noticeably faster. While most dropbar e-bike setups are literally a drag any time you get above their 25km/h limiter, the Fazua-powered Cairn was just as comfortable and natural feeling while pedaling at 20km/hr as it was at 40."
BikeRadar E-Adventure 1.0 Review
"As well as changes to its geometry, other key improvements include an update to the motor, changes to cable routing and controller position, and wheel options and compatibility for a dropper to cater to more adventurous riders."
Road.cc First Look
"We caught up with the chaps from The Rider Firm at the Eurobike show. They’re the people behind Hunt bike wheels, but they were excited to show us something else they’ve been working on: a new gravel e-bike."
A new concept with a strong pedigree"
'They produce products that they want to use, and the Cairn is a product of that: it’s a bike to replace a car, go to work the long way round, and throw in a bit of weekend adventure.'
SIZING & GEOMETRY
Suspension Compatibility
The Limited Rambler Edition is the first Cairn E-Adventure to be Suspension Compatible. The additional changes we have made to geometry and frame design made this possible. If you ever do decide to add a suspension fork to your E-Adventure, we would like to make some recommendations based on our own testing:
- 30-40mm of Travel
- 40-45mm Offset
- 700 x 45c or larger tyre
- If possible, upgrade to a larger front 180mm rotor
- 12 x 100mm spacing (keeps compatibility with stock wheel)
Find The Perfect Size
Finding the right size for your bike is crucial. Whilst every individual will have a slightly different bike fit preference, we strongly advise you to check the size chart below. Feedback from our customers states that it is a very good fit guide.
If you are still unsure, use the Smartfit size calculator to determine the best size for you. The calculations are based on scientific algorithms and data from 80,000 body measurements and more than a 100,000 bike model datasets.
Of course if you have any further questions please do get in touch with our friendly customer service consisting of real world riders like you.
60-DAY RIDE GUARANTEE
60-Day Ride Guarantee
We understand that buying a new e-bike is a big decision. To help you with that, we are so confident that you'll be happy with your Cairn E-bike, that we offer a full 60 days to ride it. If at any point during these 60 days you wish to return it for a full refund (or a product swap) please email explore@cairncycles.com, or call us on the phone number at the foot of our website. Unfortunately, we cannot offer a refund on any item that has suffered severe or crash damage within this period. However, we do offer a crash replacement discount scheme, so please contact us via email or phone and we will help.
Warranty
Cairn Cycles warranty is only valid if it is purchased through Cairn Cycles or an authorised dealer. The warranty is void if your Cairn bicycle was not purchased direct or with an un-authorised dealer, if you are not the original owner, or it has been subject to non-normal use. Non-normal use conditions mean the bike has been subjected to tricks, stunts, skate parks, pump tracks, ramps, bike parks, north shore style, trials riding, commercial or hire activities. All riding should be done within the intended use of the bicycle, see intended uses page for more details. Warranty does not apply to normal wear and tear, abuse, neglect, improper assembly or maintenance as well as crash damage or non-original parts.
Complete Bicycle
All bikes will have a 1-year complete bicycle warranty, as long as the bicycle was purchase from Cairn Cycles direct or an authorised dealer. This will cover any defective materials or workmanship for one year from the date of purchase. This will be subject to condition and use within the intended us guidelines.
Frame
All Cairn Cycles frames will be covered for a period of 5 years from the date of purchase by the original owner. Subject to normal and intended use, regular maintenance and inspection by Cairn Cycles.
Fork
All Cairn Cycles forks (for suspension fork warranty please see the manufactures website or manual) will be covered for a period of 5 years from the date of purchase to the original owner. Subject to normal and intended use, regular maintenance and inspection by Cairn Cycles.
Wheels
All Hunt Bike Wheels are provided with a 3-year warranty against material or workmanship defects. The warranty period runs from the purchase date. For more information visit help.huntbikewheels.com/support/home
Components
The individual components of your bicycle will have a warranty period as well, which is specific to the manufacture or the component. These will be either outlined in the provided manuals at point of purchase or the details can be found on the manufacturers
WAYS TO BUY
We are pleased to offer several ways to purchase your new bike. Choose between full payment, deposit only. Which ever suits you best.
Deposit Option - Fully Refundable
If bikes are available to pre-order, we offer you the option to put down a small fully refundable deposit, which secures you a bike for the date which is shown.
If you choose to put down a deposit, we will contact you a few days before the bike arrives so you can pay the remaining amount.
Product Availability
Please don't miss out, order now. Our bikes are in high demand due to their unique superior specifications. Please be aware that we are working hard to meet demand. Unfortunately sales often outstrip supply, so please order now to avoid
The availability status below the "Add To Cart" button gives an indication of when delivery can be expected.
LIMITED STOCK
If bikes are showing LIMITED STOCK, we have small numbers for immediate dispatch from our UK warehouse. Please allow for 3-4 working days in order for us to fully prepare your bike for it's new adventure.
PRE-ORDER
If the bike you would like is currently unavailable, you are able to pre-order for delivery at the advertised date. See below for deposit options available.
-
PURPOSE
-
KEY FEATURES
-
SPECIFICATION
-
FAZUA DRIVE
-
REVIEWS
-
SIZING & GEOMETRY
-
60-DAY RIDE GUARANTEE
-
WAYS TO BUY
Cairn Offers Adventure-Ready Refinements, Revised Geometry and Ekar Performance with Limited Rambler Edition
Freedom to Ramble
Before the days of recycled inner tube bar bags, cold brew kimchi energy gels and impeccably curated Instagram accounts, the bike was a tool to get you places you just couldn’t get to by a car or train. Inspired by the stories, memories and adventures of yesteryear, we set out to create a bike that would recall these simpler times while leveraging the best of 21st century tech. With the Cairn E-Adventure Limited Rambler Edition, we created a light, fast and versatile gravel e-bike, born to explore and designed to open the door to adventures anywhere.
All-New Geometry
With a pinch of inspiration from its big brother, the Cairn BRAVe, and a splash of the ‘Lower, Longer, Slacker’ geometry learnings that have made modern mountain bikes infinitely more capable, we created a bike that captures the adventurous spirit of gravel riding—the ability to jump on the bike and ride to far flung places and vistas.
Premium Build
For the Limited Rambler Edition, we continue our partnership with Fazua, offering excellent range that is further bolstered by our Range Extension pack, giving riders the ability to carry multiple batteries for truly off-grid adventures.
We have also teamed up with Campagnolo, utilizing the brand-new Ekar 13-speed drivetrain. Combining the widest range of any mechanical gravel-specific groupset on the market with the assistance of the Fazua system, the Cairn E-Adventure Limited Rambler Edition lets you hang up those walking boots because the bike is going to take you all the way to the top, climb after climb.
Frame Improvements
Committed to constantly improving bikes for riders at every opportunity, we’ve built on the improvements made to the V2 E-Adventure frame and introduced even more frame refinements in the Limited Rambler Edition.
To allow more flex in the seat post and create a more comfortable ride, we have further shortened the seat tubes, which has the additional benefit of decreasing stand over height of the bikes in all sizes. We have designed a slimmer forged chain stay yoke profile with smaller tube diameters, which increases vertical compliance whilst maintaining lateral stiffness for pedalling. For riders, these improvements reduce leg and knee fatigue.
See Full Details
Last but not least, we have decreased the down tube profile by roughly 25%, which reduces frame weight while also offering a more compliant front triangle, resulting in a softer ride and less hand fatigue for the rider.
Read More
The HUNT X Cairn E-Gravel Disc wheels have been developed specifically for the Cairn E-Adventure and feature the same steel axle and increased pawl contact area for a longer lasting hub. Slightly wider rim than that on the V1 bike gives better tyre profile and allows lower pressures so increases grip and comfort.
Geometry
Featuring all-new geometry, the Rambler Edition aims to bring the rider more control without taking away the lively and responsive feel we have all come to know and love from the E-Adventure and gravel bikes in general.
The steeper 74-degree seat tube angle allows for better climbing on rough terrain, giving you a more aggressive attacking position whilst maintaining the all-important rear wheel traction. Combined with the slacker 70-degree head angle and increased 75mm trail, descent characteristics are more predictable, stable and comfortable, empowering the rider to let off the brakes and push the bike further.
Read More
The net result of the geometry changes is a riding position that puts the rider more in the bike than perched on top, achieved by increasing the bottom bracket drop to 80mm whilst maintaining a stack height with manageable saddle-to-bar drop. All this also goes along way to bringing capability with the latest breed of Gravel suspension forks. Tech speak aside, we made the Rambler Edition more fun to ride.
Finally, we’ve responded to requests from many riders and introduced an extra small size to the E-Adventure range.
Cairn have teamed up again with HUNT to bring a specific wheel fit for the rigours for which this bike was designed. The HUNT X Cairn E-Gravel Disc wheels have been developed specifically for the Cairn E-Adventure Rambler Edition and feature a steel axle and increased pawl contact area for a longer lasting hub. The wide 25mm internal Gravel X Wide rims offer better tyre profile and allow for lower pressures, increasing traction and comfort. Like all HUNT wheels, the set is 100% tubeless compatible and features the all-new N3W Campagnolo freehub body.
Introducing Campagnolo Ekar; born on the mountain that gave the groupset its name and with which it shares unmistakable and authentic characteristics. Cima Ekar is a charmingly diverse little gravel paradise in the Venetian Prealps. It’s not the highest peak nor the steepest climb, and it's not a celebrated regularly on the Giro or the other big-name races. Instead, Ekar is a gateway to adventure, offering a test of skill, technique and fitness. The mountain and region begs to be explored with networks of broken roads, single track and trails pointing off in every direction.
Read More
The Ekar group set imbodies everything that has become synonymous with Campagnolo. It’s the lightest Gravel groupset on the market, while still durable with heat-treated carbon steel and nickel-chrome-satin surface treatment to reduce overall material wear and friction.
The groupset’s 13-speed 10 – 44 tooth cassette offers the widest mechanical gravel gearing range on the market with the smallest jumps between gears, an attribute that riders will appreciate several hours and several mountain passes into their ride.
Fast, sprightly and confidence to push hard in the turns – this is what a good tyre should feel like!
See Full Details
Vittoria have the know how, they are one of the largest bicycle tyre manufactures in the world and the design and development that gores into the tyres is astonishing. The Terreno Dry tyres used on this bike feature 3 compounds and Graphene to deliver ultimate performance in a straight line and corners alike.
Frame
6061-T6 alloy with Top Tube integrated Fazua touch remote
Fork
Full Carbon with Anything mounts on both legs (max tyre clearance 700x45c)
Wheels
Hunt Gravel X Wide Rim, Hunt E-Gravel Hub, Pillar Triple Butted Spokes.
Tyres
Vittoria Terrano Dry 700 x 38c
Handlebar
Cairn Adventure 20 Degree Flare, 65mm Reach, 105mm Drop XS/S 42cm, M/L - 46cm, XL - 48cm
Stem
Cairn Adventure 6061-T6 - XS/S/M- 70mm, L/XL - 90mm
Handlebar Tape
Cairn Tacky Gravel 3mm
Crankset
Miranda Delta Alloy w/ 44t Spider XS/S - 165mm, M/L - 170mm, XL - 175mm
Cassette
Campagnolo Ekar 13 speed 10-44T
Chain
Campagnolo Ekar 13 Speed
Shifters
Campagnolo Ekar 13 Speed
Rear Mech
Campagnolo Ekar 13 Speed
Brakes
Campagnolo Ekar, hydraulic disc brake levers, 13-speed mechanical shifting
Rotors
Campagnolo Ekar 160mm
Saddle
Selle Italia X Base 143mm
Seat Post
Cairn Carbon Seat post 27.2mm 350mm
Thru Axles
Cairn Alloy Thru Axle w/Removable Bottle Opener Handle
Other
Removeable rear mudguard bridge
Weight
14.3kg Medium w/Motor and Battery
The lightest and most compact drive system in the industry!
For the E-Adventure Rambler we continued to partner with the amazing team at Fazua with their equally amazing Evation drive system. Its lightweight, integrated and natural pedal feel was exactly what we were looking for to complement our bikes. At only 4.6kg for the full system its helps to create a really lightweight ebike, furthermore the system has no mechanical resistance if not in use, so if the worst happens and you run out of battery it wont feel like riding a heavy bike through treacle like some other system. The battery its self though is just over 1kg and with the Cairn keg and cage you can easily carry another battery to further your exploration.
Ride 50 Street Drivepack and BB
All New Ride 50 Street Drivepack and BB from Fazua features refinements that take the base set by the Evation system to the next level. The new Drivepack features increased torque output, now putting out up to 58nm of torque, helping tackle those technical or steep climbs. New cooling fins are present to manage system temperature and gone is the bolted drivepack USB cover.
The Ride 50 Street BB unit sees the biggest changes, with new torque and cadence sensors increasing the sensitivity of the unit by 70%. This will allow the system to further smooth out that natural ride feel that the Fazua System has become known for. Almost a by-product of this additional data, it makes the Fazua system nearly 10% more efficient!
Energy 250x
The Energy 250x battery brings the final flourish of details to the build. The 250x offers the capability to turn your bike on and off from the Remote FX. No more dropping the Drive pack out to turn the system on and off.
A new cap on the charging port adds a nice touch and reduces maintenance in the future.
Three Different Riding Modes
Choose from three levels of assistance or pedal without any help, its that simple.
Read More
Breeze
Gentle, constant and 100 watts* like a strong tailwind even at low rider power.
*default settings
River
Progressive and very sporty mode, for a smooth riding experience! The strength of the support precisely follows your own power. Give a lot - and get a lot from the motor (max. 210 watts*)
Rocket
Aggressive assistance that helps you to tackle the steepest (max. 250 watts*)
Bike Magazine & Website Expert's View
2020 Cycling Weekly Editor's Choice
"The E-Adventure 1.0 is an incredibly likeable bike to ride. I can be pretty on the fence when it comes to e-bikes, preferring like many for my legs to be the main performance delivery system for my riding. But after the first ride I came away with the same sense of rewarded effort as if I had ridden a ‘normal’ gravel bike – but one that I managed to ride farther than my legs felt like they had ridden."
2021 Bicycling E-Bike Award
"With its impressively steady handling manners, reasonably smooth ride, and a plethora of mounts, the Cairn is best for going places—particularly on roads and paths less traveled."
Cycling Plus First Ride
'Buy if you want a great gravel bike and like the idea of assistance with it.'
Cycling News Recommends 4.5/5 Review
"Cairn has taken the already somewhat niche electric gravel bike concept, sprinkled a little adventure dust on it and come up with one of the most versatile e-bikes around."
Cyclist Magazine Review
"A well considered e-gravel bike that now offers a choice of wheel configurations."
Bike Rumour 2019 Editor's Choice Award
"The most interesting e-bike I rode in 2019, was an e-gravel bike from Cairn. Propelled by a Fazua pedal-assist powertrain in the downtube, it strikes the perfect balance of giving just enough support to make the climbs a bit easier without every feeling like you are being pulled along. Comparing this back to back with a standard gravel bike on the same on & off-road loop, my heartrate was always just as high riding the Cairn, just my speed up every climb was noticeably faster. While most dropbar e-bike setups are literally a drag any time you get above their 25km/h limiter, the Fazua-powered Cairn was just as comfortable and natural feeling while pedaling at 20km/hr as it was at 40."
BikeRadar E-Adventure 1.0 Review
"As well as changes to its geometry, other key improvements include an update to the motor, changes to cable routing and controller position, and wheel options and compatibility for a dropper to cater to more adventurous riders."
Road.cc First Look
"We caught up with the chaps from The Rider Firm at the Eurobike show. They’re the people behind Hunt bike wheels, but they were excited to show us something else they’ve been working on: a new gravel e-bike."
Singletrack Charged Full Review
'They produce products that they want to use, and the Cairn is a product of that: it’s a bike to replace a car, go to work the long way round, and throw in a bit of weekend adventure.'
Suspension Compatibility
The Limited Rambler Edition is the first Cairn E-Adventure to be Suspension Compatible. The additional changes we have made to geometry and frame design made this possible. If you ever do decide to add a suspension fork to your E-Adventure, we would like to make some recommendations based on our own testing:
30-40mm of Travel
40-45mm Offset
700 x 45c or larger tyre
If possible, upgrade to a larger front 180mm rotor
12 x 100mm spacing (keeps compatibility with stock wheel)
Find The Perfect Size
Finding the right size for your bike is crucial. Whilst every individual will have a slightly different bike fit preference, we strongly advise you to check the size chart below. Feedback from our customers states that it is a very good fit guide.
If you are still unsure, use the Smartfit size calculator to determine the best size for you. The calculations are based on scientific algorithms and data from 80,000 body measurements and more than a 100,000 bike model datasets.
Of course if you have any further questions please do get in touch with our friendly customer service consisting of real world riders like you.
Size Chart
60-Day Ride Guarantee
We understand that buying a new e-bike is a big decision. To help you with that, we are so confident that you'll be happy with your Cairn E-bike, that we offer a full 60 days to ride it. If at any point during these 60 days you wish to return it for a full refund (or a product swap) please email explore@cairncycles.com, or call us on the phone number at the foot of our website. Unfortunately, we cannot offer a refund on any item that has suffered severe or crash damage within this period. However, we do offer a crash replacement discount scheme, so please contact us via email or phone and we will help.
Warranty
Cairn Cycles warranty is only valid if it is purchased through Cairn Cycles or an authorised dealer. The warranty is void if your Cairn bicycle was not purchased direct or with an un-authorised dealer, if you are not the original owner, or it has been subject to non-normal use. Non-normal use conditions mean the bike has been subjected to tricks, stunts, skate parks, pump tracks, ramps, bike parks, north shore style, trials riding, commercial or hire activities. All riding should be done within the intended use of the bicycle, see intended uses page for more details. Warranty does not apply to normal wear and tear, abuse, neglect, improper assembly or maintenance as well as crash damage or non-original parts.
Complete Bicycle
All bikes will have a 1-year complete bicycle warranty, as long as the bicycle was purchase from Cairn Cycles direct or an authorised dealer. This will cover any defective materials or workmanship for one year from the date of purchase. This will be subject to condition and use within the intended us guidelines.
Frame
All Cairn Cycles frames will be covered for a period of 5 years from the date of purchase by the original owner. Subject to normal and intended use, regular maintenance and inspection by Cairn Cycles.
Fork
All Cairn Cycles forks (for suspension fork warranty please see the manufactures website or manual) will be covered for a period of 5 years from the date of purchase to the original owner. Subject to normal and intended use, regular maintenance and inspection by Cairn Cycles.
Wheels
All Hunt Bike Wheels are provided with a 3-year warranty against material or workmanship defects. The warranty period runs from the purchase date. For more information visit our help pages
Components
The individual components of your bicycle will have a warranty period as well, which is specific to the manufacture or the component. These will be either outlined in the provided manuals at point of purchase or the details can be found on the manufacturers
Ways to Buy
We are pleased to offer several ways to purchase your new bike. Choose between full payment or deposit only. Which ever suits you best.
Deposit Option - Fully Refundable
If the wheels are available to pre-order, we offer you the option to put down a small fully refundable deposit, which secures you the wheels for the date which is shown.
If you choose to put down a deposit, we will contact you a few days before the wheels arrive so you can pay the remaining amount and get your wheels in time.
Product Availability
Please don't miss out, order now. Our bikes are in high demand due to their unique superior specifications. Please be aware that we are working hard to meet demand. Unfortunately sales often outstrip supply, so please order now to avoid
The availability status below the "Add To Cart" button gives an indication of when delivery can be expected.
LIMITED STOCK
If wheels are showing LIMITED STOCK, we have small numbers for immediate dispatch from our UK warehouse. Please allow for 3-4 working days in order for us to fully prepare your bike for it's new adventure.
PRE-ORDER
If the bike you would like is currently unavailable, you are able to pre-order for delivery at the advertised date. See below for deposit options available.