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 Rival
The E-Adventure is all the e-bike you’ll ever need.
By combining the frames' versatility-focused geometry, a lightweight Ride 50 Street Drive Pack, and the reliable capability of SRAM's Rival drivetrain, the E-Adventure is ready for everything from your daily commute to a weekend-long adventure.
KEY FEATURES
Up to 120km on a single battery with the Fazua Ride 50 drive pack. Made in Germany.
Gravel Specific Drivetrain: SRAM Rival.
Revised geometry ensuring maximum versatility and capability on technical terrain.
Adaptable: Multiple luggage loading options.
Designed & developed in West Sussex, UK
EXPERTS' VIEW
"It's a bike to replace a car, go to work the long way round, and throw in a bit of weekend adventure" – Singletrack Magazine
"A versatile e-gravel bike that will tackle anything you ride it on" Rebecca Bland, Ebiketips
60 Day Ride & Return
Shipping calculated at checkout
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.
Ride More, Explore More
Designed from the frame up to offer the versatility needed to expand your riding horizons.
With the range of up to 120 kilometers on a single charge, the E-Adventure is ideal for fast (or not) gravel rides, multi-day and multi-surface bikepacking missions, singletrack exploration, or just ditching the car and taking on life's daily adventures by bike.
Versatile, Capable Frameset
Designed by riders, the E-Adventure frame geometry was built to offer comfort, control and confidence to keep you smiling over any terrain and any distance. Constructed from 6061-T6 Alloy for low weight and excellent durability, with clearance for up to 45mm tyres and ample mounting points for mudguards, luggage racks, and an anything cage, the E-Adventure frame is as versatile as it is capable. Load it up and explore, or just tack on that extra loop to your favourite ride.
Simple, Reliable Build Spec
The Fazua Ride 50 drive system was selected for its light weight, plug and play functionality and efficient, natural feeling pedaling support. The system offers three intuitive assistance levels, giving you control over your range, pace and riding style while adding just 4.6kg to the bike.
The easy to use 1x SRAM Rival groupset offers ample gear range for the steepest routes without the complication of a 2x drivetrain. Powerful hydraulic disc brakes with 160mm rotors keep you under control. The HUNT X Cairn E-Gravel Disc wheels have been developed especially for the Cairn E-adventure 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 your traction and comfort. Like all HUNT wheels, they are tubeless-ready and backed by a best-in-class support team.
KEY SPECS
The Fastest Wheelset Is The Sum Of The Fastest Parts
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.
E-Adventure Rival Full Specification
Frame
6061-T6 alloy with Top Tube integrated Fazua Touch remote. 12x142mm rear spacing.
Fork
Full Carbon (max tyre clearance 700x45c). 12x100mm spacing.
Wheels
HUNT 4 Season Gravel X-Wide rim, HUNT E-Gravel Hub, Pillar Triple Butted Spokes
Tyres
Vittoria Terreno Dry 700x38c
Handlebar
Ritchey RL1 Balquiano - 42cm Width, Drop 118mm, Reach 73mm, Drop flare 12°
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
Cassette
Sunrace CSMS8 11-42t
Chain
KMC E11S
Shifters
SRAM Rival 11 Speed
Brakes
Sram Apex 1
Rear Mech
SRAM Rival Long Cage 11 Speed
Brakes
SRAM Rival Hydraulic Brake Lever
Rotors
SRAM Centreline 160mm
Saddle
DDK Cairn
Seatpost
Cairn 6061 Alloy 27.2mm
Thru-Axles
Cairn Alloy Thru Axle w/Removable bottle opener handle
Other
Removable rear mudguard bridge
Weight
14.3kg Medium w/Motor and Battery
FAZUA DRIVE SYSTEM
For the E-Adventure, we continued to partner with the team at Fazua and spec their Ride 50 Street Drive Pack.
Its integration and natural pedal feel were exactly what we were looking for to complement our bikes. At only 4.6kg for the full system, it helps to create an incredibly lightweight and nimble e-bike. Furthermore, the system has no mechanical resistance if not in use, meaning you can choose to ride it as a normal/analogue bike without any drawbacks.
Choose from three levels of assistance or pedal without any help at all:
Breeze (~100 watts*)
Gentle constant. Like a strong tailwind even at low rider power.
*default settings
River (~210 watts*)
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.
Rocket (~250 watts*)
Aggressive assistance that helps you to tackle the very steepest climbs. This one will put a big grin on your face!
Ride 50 Street Drive Pack
Fazua’s all-new Ride 50 Street drive pack takes the original Evation system to the next level. The new drive pack 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.
The Ride 50 Street bottom bracket 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 Evation system has become known for.
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 (mounted in the top tube).
A new cap on the charging port adds a nice touch and reduces maintenance in the future.
SIZING & GEOMETRY
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 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
- PURPOSE
- KEY FEATURES
- SPECIFICATION
- FAZUA DRIVE
- REVIEWS
- SIZING & GEOMETRY
- 60-DAY RIDE & RETURN GUARANTEE
Ride more, Explore More
Ride More, Explore More
Designed from the frame up to offer the versatility needed to expand your riding horizons.
With the range of up to 120 kilometers on a single charge, the E-Adventure is ideal for fast (or not) gravel rides, multi-day and multi-surface bikepacking missions, singletrack exploration, or just ditching the car and taking on life's daily adventures by bike.
Versatile, Capable Frameset
Designed by riders, the E-Adventure frame geometry was built to offer comfort, control and confidence to keep you smiling over any terrain and any distance. Constructed from 6061-T6 Alloy for low weight and excellent durability, with clearance for up to 45mm tyres and ample mounting points for mudguards, luggage racks, and an anything cage, the E-Adventure frame is as versatile as it is capable. Load it up and explore, or just tack on that extra loop to your favourite ride.
Simple, Reliable Build Spec
The Fazua Ride 50 drive system was selected for its light weight, plug and play functionality and efficient, natural feeling pedaling support. The system offers three intuitive assistance levels, giving you control over your range, pace and riding style while adding just 4.6kg to the bike.
The easy to use 1x SRAM Rival groupset offers ample gear range for the steepest routes without the complication of a 2x drivetrain. Powerful hydraulic disc brakes with 160mm rotors keep you under control. The HUNT X Cairn E-Gravel Disc wheels have been developed especially for the Cairn E-adventure 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 your traction and comfort. Like all HUNT wheels, they are tubeless-ready and backed by a best-in-class support team.
Why settle for gear that is a trickle-down version of what the pros ride when there's a group that gives 100% of what you demand? Demands that are different, not less than, the pros'. Demands that change and evolve with your riding and performance, whether you're race ready or adventure ready. The SRAM Rival 22 groupset delivers immense performance across a broad variety of bikes and disciplines. The Rival 22 shift-brake levers offer comfortable textured levers with ErgoFit™ for improved grip and finger wrap. Whether you ride road, gravel, or cyclocross, Rival 22 is a group for every need.
The HUNT X Cairn E-Gravel Disc wheels have been developed specifically for the Cairn E-Adventure 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 your traction and comfort. Like all HUNT wheels, they are tubeless-ready.
The E-Adventure was built to take you acress many types of terrain quickly and confidently, which requires a versatile and reliable tyre. The Terreno Dry from Vittoria is the perfect pairing for the places the E-Adventure will take you.
Aggressive file-tread, or super low-profile knob design? The Terreno Dry bridges the gap between file treads and traditional all-condition treads. The key to this is the unique angled "fish scale" design that allows the centre tread to roll extremely fast, yet offer traction when loaded in cornering and braking. Add the transitional height mid and side tread and the Terreno Dry transitions as smoothly as it rolls.
Cairn E-Adventure Rival Full Specification
Frame
6061-T6 alloy with Top Tube integrated Fazua touch remote. 12x142mm rear spacing.
Fork
Full Carbon (max tyre clearance 700x45c). 12x100mm spacing.
Wheels
HUNT 4 Season Gravel X-Wide rim, HUNT E-Gravel Hub, Pillar Triple Butted Spokes
Tyres
Vittoria Terreno Dry 700x38c
Handlebar
Ritchey RL1 Balquiano - 42cm Width, Drop 118mm, Reach 73mm, Drop flare 12°
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
Cassette
Sunrace CSMS8 11-42t
Chain
KMC E11S
Shifters
SRAM Rival 11 Speed
Rear Mech
SRAM Rival Long Cage 11 Speed
Brakes
SRAM Rival Hydraulic Brake Lever
Rotors
SRAM Centreline 160mm
Saddle
DDK Cairn
Seatpost
Cairn 6061 Alloy 27.2mm
Thru-Axles
Cairn Alloy Thru Axle w/Removable bottle opener handle
Other
Removable rear mud guard bridge
Weight
14.3kg Medium w/Motor and Battery
Speed Limitations
- UK/EU/ROW – All Cairn Bicycles sold in the UK/EU/ROW will be set to the maximum pedal-assisted speed limit of 15.5mph or 25kph.
- US/NA – All Cairn Bicycles sold in North America will be set up per Class 1 status, allowing the bike to assist to 20mph or 32kph only when the rider is pedalling.
For the E-Adventure, we continued to partner with the team at Fazua and spec their Ride 50 Street Drive Pack.
Its integration and natural pedal feel were exactly what we were looking for to complement our bikes. At only 4.6kg for the full system, it helps to create an incredibly lightweight and nimble e-bike. Furthermore, the system has no mechanical resistance if not in use, meaning you can choose to ride it as a normal/analogue bike without any drawbacks.
Choose from three levels of assistance or pedal without any help at all:
Breeze (~100 watts*)
Gentle constant. Like a strong tailwind even at low rider power.
*default settings
River (~210 watts*)
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.
Rocket (~250 watts*)
Aggressive assistance that helps you to tackle the very steepest climbs. This one will put a big grin on your face!
Ride 50 Street Drive Pack
Fazua’s all-new Ride 50 Street drive pack takes the original Evation system to the next level. The new drive pack 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.
The Ride 50 Street bottom bracket 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 Evation system has become known for.
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 (mounted in the top tube).
A new cap on the charging port adds a nice touch and reduces maintenance in the future.
Bike Magazine & Website Expert's View
Cycling Electric Review
"Versatile, A good combination of frame and motor, Plenty of mounting points."
Move Electric 4.5/5 Review
"The Cairn Cycles E-Adventure is an electric gravel bicycle designed and tested on British landscapes. Definitely a bike that makes you want to explore.."
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 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."
All-New Geometry
Updated Geometry
Featuring all-new geometry, the E-Adventure aims to bring the rider more control without taking away the lively and responsive feel our bikes are known for.
The steeper 74-degree seat tube angle allows for better climbing on rough terrain, giving you a more efficient pedalling position, whilst maintaining all-important rear wheel traction. Combined with the slacker 70-degree head angle and increased 75mm trail, coming back downt the hill is a more predictable, stable and comfortable, experience, empowering the rider to let off the brakes and push the bike further.
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.
Suspension Compatibility
The Rambler is the first Cairn E-Adventure to be compatible with suspension forks. 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
- 700x45c (or larger) tyre
- If possible, upgrade to a larger front 180mm rotor
- 12x100mm 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 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
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 complete our Technical Support form, 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