We wanted to take the hassle out of buying your next bike, so we worked closely with our partner brands to create the essential gravel bike for all riders and abilities.
The specification is based on our own rider testing around the trails of Northern Ireland, and reflects a truly reliable and high performance bike build.
Don't like it, no fuss, just switch it up for the parts you want or upgrade to a higher specification component for increased performance.
'Fit for you'
Everybody is different, and we know that cockpit configuration can make or break your riding experience.
Dont like wide handlebars, or fancy a different wheel size? Maybe you want to add a dropper seat post for that extra confidence when the trail takes a turn and points you downhill. You can switch out any of these in our bike builder and customise your ride just the way you want it.
Build my bike
Starting with our basic GR1 build, this will set you up to tackle any terrain with confidence and authority.
Be it a weekend gravel grinder, or a relaxed cruise through the local woods, our basic GR1 wont come unstuck or let you down.
The FUSTLE Causeway straps you in to the drivers seat from the moment you go to place your order. Once you've customised your sizing and selected the component range to best suit your ride its time to get amongst it! With a agressive 69' head angle and dropped top tube for a lower stand over the Causeway oozes confidence without sacrificing agility in your ride.
Frame: The Causeway GR1 6061 grade aluminium frame is compatible for both 650b and 700C wheel sets, with 142mm x 12mm rear axle spacing and 100mm x 12mm on the front, secured into your frame by bolt through axles. With internal cable routing throughout and a modern day 31.6 seat tube, your options from static seat posts to dropper posts are endless. Included is the PRO Koryak static seatpost with the option to upgrade to a 120mm dropper seat post. A removable bridge for full length mud guards to help tackle whatever winter throws at you. A variety of cockpit options to help you lock in that feel your looking for from the moment you throw your leg over your Causeway GR1, whether its an aggressive trail ripper or your weekend adventure bike, the PRO Koryak bar and stem combinations have you covered. All locked in place with the trusty FSA 1 1/8 - 1.5 inch headset.
Fork: The Carbon Fibre Causeway fork and tapered steerer has been engineered and manufactured as one piece to ensure strength and durability. Being both 650b and 700C compatible and allowing for tyre clearances up to 50mm on 700C. Three fixing points on either side of the fork, allowing for mudguard, paneers, water bottle etc etc.
Standard Specification; (We hand picked these parts as a great spec for most riders, but feel free to upgrade wherever the option appears)
Wheels: WTB Speed Terra 700C
Speedterra wheels provide dependable tubeless performance capable of enduring many seasons of riding. All Speedterra wheels utilize four Enduro radial bearings, an open-cavity design, sleeved joints, water transfer decals and a reliable 4-pawl freehub design with 10 degrees of engagement. Double butted spokes and black brass nipples provide. All sizes of Speedterra wheels come with TCS tubeless tape, Solid Strip and brass TCS valves preinstalled. Customizable with centerlock or six- bolt rotor mounts, as well as Shimano or XD driver bodies. All 23mm variants are 28-hole with a 100x12mm front hub and 142x12mm rear.
Tyres: WTB Resolute 42
Resolute 42 is the ultimate all-weather gravel tire for those who believe there is one perfect tread pattern for all your rides. Truly all-season in nature, we call this our set-it-and-forget-it tyre that keeps on keepin’ on.
Features-
- Widely spaced square knobs deliver consistent traction while shedding muck with ease.
- Retro-esque tanwalls provide modern performance in a classic look.
- Performs well in all conditions, no need to swap tyres based on the weather.
Saddle: WTB Volt Pro
The Volt is WTB most popular mountain saddle. Shaped for speed and comfort, time tested and proven, the Volt makes for an incredibly versatile saddle that has gained endless acclaim among riders.
DIMENSIONS: 135, 142 & 150 x 265mm
FEATURES:
- Medium padding thickness and subtle curves make the Volt our most popular mountain saddle.
- An upward curved tail and gentle drop to the nose provide something to push against while pedaling.
Groupset: Shimano GRX RX600 1x11 Groupset (Optional upgrade to RX800 is available)
With the GRX RX600 1x11 groupset, Shimano does not reinvent the Gravel scene, but equips it with components designed specifically for riding on non-paved roads. So that you and your friends can be exactly where and how you want to be. The groupset consists of a 1x crank with a 40 tooth chainring, rear derailleur, disc brake set with STI right shift lever, chain and cassette (105 or MTB). A great package for cycling adventures, bikepacking tours or off-road races.
The Shimano GRX RX600 groupset includes:
- 1 x Shimano GRX crankset (FC-RX600-1)
- 1 x Shimano GRX Shadow Plus rear derailleur (RD-RX812)
- 1 x Shimano SLX cassette (SLX CS-M7000 11-42t)
- 1 x Shimano SLX Quick-Link chain (11spd)
- 1 x Shimano GRX BR-RX400 + GRX BL-RX600 disc brake, front
- 1 x Shimano GRX BR-RX400 + GRX ST-RX600 disc brake, rear
- 1 x Shimano SM-BH90-JK-SSR brake hose, 1000 mm (front)
- 1 x Shimano SM-BH90-JK-SSR brake hose, 1700 mm (rear)
- 2 pair of Shimano L03A brake pads
- 2 x adapters for 160 mm rotors (front/rear)
Bottom Bracket: SM-BB72-41
SHIMANO ULTEGRA - Bottom Bracket - Press Fit - HOLLOWTECH II - 86.5 mm shell width
Cassette: Shimano SLX 11-42
Perfect for 1x and 2x MTB drivetrains, SHIMANO's M7000-11cassette offers Rider Tuned gear steps for maximum cadence control across the varied terrain of mountain biking.
Rotors: Shimano RT76
SMRT76 rotors give excellent performance using the 6-bolt mounting system. The precision cut stainless steel braking surface improves pad clearing in muddy conditions while aiding cooling under high load.
(Optional upgrades and Centrelock options are available)
Handlebar: PRO Discover Alloy
PRO's Koryak products are named after the Koryak highlands of Eastern Siberia. The robust all-mountian-parts bring you the confidence of being extremely resistant. Highest quality aluminium brings the ideal balance between weight and stiffness. High quality material and cool optic to go for the limits.
Available with a choice of drop flare, this hardy handlebar lets you take to the loosest and roughest terrains with control and poise. Featuring an ergonomically-focused top section with an oval-shaped centre, the bar gives a natural position for your palms when riding tall, while the size and geometry of the drops enhance comfort when getting your head down.
Built from a sturdy and durable alloy, it copes with the most extreme conditions and has specially placed cable holders for use with Shimano Di2 shifting systems, making this Discover bar a dazzling choice for the rough and ready rider.
Stem: PRO Koryak
PRO's Koryak products are named after the Koryak highlands of Eastern Siberia. The robust all-mountian-parts bring you the confidence of being extremely resistant. Highest quality aluminium brings the ideal balance between weight and stiffness. High quality material and cool optic to go for the limits.
- Rigid trail -An XC and 'All-Mountain' stem made of forged and cnc-machined 7075 aluminium. Strong & durable 4-bolt headlock clamp-design.
- 0 degree - available in different length.
- Bar clamp: 4-bolt, detachable
- Material: 7075 aluminium, cnc machined
Seatpost: PRO Koryak Alloy
PRO's Koryak products are named after the Koryak highlands of Eastern Siberia. The robust all-mountian-parts bring you the confidence of being extremely resistant. Highest quality aluminium brings the ideal balance between weight and stiffness. High quality material and cool optic to go for the limits.
