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Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0
Cairn E-Adventure 1.0

Cairn E-Adventure 1.0

Designed by riders for riders so you can adventure more, ride more, experience more

Lightweight, fast & versatile; run with the FAZUA motor/battery or without to make a great non-E gravel bike; run 700C x 45C tyres or 650B x 2.25”. Quick & capable geometry, great for tackling roads and trails. Multi-day epic trips, weekend exploring or commuting, turns every ride into a fast paced adventure.

The Experts' View

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£ 2,989.00 GBP
£ 2,989.00 GBP
£ 2,989.00 GBP

Finance available only £137.21 per month (9.9% APR) over 24 months (12 and 36 months also available). Choose finance option above and click Klarna at checkout.

Finance only available in UK Mainland

Pre-order for delivery Dec Wk 3
FREE Shipping
60 Day Ride & Return Period

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 disappointment.

The Purpose

How do you feel about the idea of travelling twice as far on your bike for the same effort? Or how about a weekend away without the need for a car? Long-distance commuting without breaking a sweat? All of these (and more) are becoming possible with the advent of the e-bike.

The Cairn E-Adventure 1.0 was born to help you achieve this. We've been listening to devoted riders like you, and thinking on how best make the most of this whole new way of riding. Having e-assist on a bike will enable all of us to explore more of the paths-less-travelled and make it easier for people to choose bike over car more often, which can only be a great thing.

Please note: The final spec is as listed in the Full Specification tab with the possibility of a few minor updates. We have also been working on an updated paint job which you can see in the first images and the 360° image above.

Key Features

Equipped with the renowned FAZUA motor, ability to run both 700C and 27.5"/650B wheels (with clearance for up to 700x45C [650Bx2.2"] tyres) and mounts for both mudguards and panniers, it makes it the bike that can do it all. Imagine covering twice the distance for the same effort, enabling you to explore more ground every time you set off.

Cairn Cycles Fazua Battery

Cairn Cycles Seat Tube

Cairn Cycles Tyre Clearance

Cairn Cycles Top Tube Junction

Cairn Cycles Accessories

  • Frame: 6061-T6 Alloy
    • Updated down tube FAZUA Touch Remote - See Here
    • Bottle Cage Mounts on the seat tube.
    • Anything cage on the down tube.
    • Full Mudguard Mounts front and rear.
    • FAZUA Battery Lock feature
    • Double-walled down tube for increased durability.
    • Full internal dropper post routing option.
  • Fork: Full Carbon (Including steerer)
    • Anything Cage Mounts on both sides.
    • Internal Dynamo Routing
  • Wheels: HUNT 4 Season Gravel Disc (Can fit both 700C and 650B wheels)
  • Tyres: WTB Venture 700x40c
  • Axles: Thru-Axles, Alloy | 12x100 mm Front | 12x142 mm Rear
  • Headset: FSA Sealed Bearing
  • Handlebars: Ritchey Comp Butano | Drop 118 mm | Reach 73 mm | Sweep 4° | Flare 12°
    • Size S - 42 cm
    • Size M, L - 44 cm
    • Size XL - 46 cm
    • *Width measured centre to centre
  • Bartape: Fabric Knurl
  • Stem: Ritchey Comp 4-Axis | ±6°
    • Size S - 70 mm
    • Size M - 80 mm
    • Size L - 90 mm
    • Size XL - 100 mm
  • Crankset: Praxis Works FAZUA-specific | Alloy | 42 t
    • Size S - 165 mm
    • Size M, L - 170 mm
    • Size XL - 175 mm
  • Cassette: SRAM XG-1150 | 10-42 t
  • Chain: KMC X11
  • Shifters: SRAM Rival Hydro 1x
  • Rear Mech: SRAM Rival 1x Long Cage
  • Brakes: SRAM Rival Hydro
  • Rotors: SRAM Centerline | 6-bolt | 160mm
  • Saddle: Fabric Scoop Elite Shallow
  • Seatpost: Kalloy Uno with carbon shaft | 27.2⌀ | 350mm
  • Electric Motor: Fazua Evation 1.0
  • Included: FAZUA Motor, Battery, Battery Charger, Down Tube Touch Remote Control & Mobile App.
  • Weight:
    • With motor and battery (no pedals) - ±14.5kg (31.9lbs)
    • Without motor and battery, with downtube cover (no pedals) - ±12kg (26.4lbs)

You can also purchase spare batteries, battery chargers and a downtube cover for riding without any e-assist from HERE.

Black Pepper Update

Fazua Black Pepper Update

We are super excited to let you know that all Cairn bikes will be coming with the latest FAZUA Motor Software 2.0 installed. These are some of the new updates that make the FAZUA drive system even better:

  • Performance: The evation drive system’s motor control was completely overhauled from the ground up. The result is a marked improvement in efficiency, making it possible to get even more performance from the compact unit.
  • Cadence range: One of the most clearly noticeable performance enhancements is the delivery of power over a broad cadence range. The evation drive system now provides more efficient assistance at a constant motor output over a cadence range of 50–120 revolutions per minute.
  • Riding feel: From its inception, the Evation drive system has delivered a ride characterized by gentle, natural assistance. But now, riders can enjoy an even more authentic feel: In extensive biomechanical analyses, FAZUA used complex algorithms and methods to develop riding dynamics that perfectly adapt to the rider’s individual pedaling style—to guarantee the ideal level of assistance in every riding scenario.

Learn more about the evation Motor Software 2.0 here.

How to use the drive system

This useful instructional video from FAZUA will help you start up the drive system on your Cairn bike


Fazua Evation

Fazua Evation Drivepack

Fazua Bottom Bracket

Fazua Remote Control

Size Chart

Cairn Geometry

Find the perfect size

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.

Book a test ride

Cairn Geometry

9/10 Review

"The E-Adventure manages to retain the feel and ride experience of a 'normal' machine yet will give you a much needed boost when you most require it. It also offers great value in terms of its standard equipment and with the latest update the Fazua motor system promises to be even better."

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."

First Ride Review

"I finished my short time on the Cairn Cycles e-adventure grinning ear to ear and very impressed by the whole package."

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"

"Why am I so excited about this? Basically, there’s all the ingredients there for what I think is good about bikes. It’s for adventure, it’s for taking the long way round to work, it’s for doing the shopping, it’s for leaving the car behind, or just choosing the car less often.

With the Fazua e-assist system, it’s an e-bike, or it’s not. You can forget to charge it and still ride to work. You can ride to work every day without being worn out. You can ride to work every day and rip your legs off. It’s a do a load of everything bike, and that gets me excited."