Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.
We offer FREE DELIVERY of your bike to your home or place of work. Once you've placed your order, our Customer Care team will be in contact to offer a convenient delivery date of your choice.
We've partnered with Pedalsure to offer you 30-DAYS FREE bike insurance on new bikes over £400. Visit our Cycle Insurance page to learn more and claim.
GT Grade Carbon Expert Gravel Bike 2021
Amalgamating a high-grade carbon frameset construction with a clever design and reliable components, the GT Grade Carbon Expert Gravel Bike infuses enthusiasm, control and fun into any multisurface adventure.
The full carbon frameset uses an advanced layup format to promote high levels of lateral stiffness for efficient power transfer while remaining lightweight. The striking design of the frameset incorporates the Triple Triangle configuration that allows the seatstays to float and give extra vertical compliance over rougher terrain. Balanced handling can be tweaked to be more reactive or more stable by the fork’s integrated flip-chip and generous clearances allow broader tyres to be used for increased grip and comfort. The frameset sports plenty of luggage mounting options so the rider can combat the longest of adventures with all of the necessary supplies.
The wheelsets WTB ST i23 rims are a solid addition to the build and their wide internal rim width works to support tyre sidewalls to lower rolling resistance and increase line accuracy. These wheels are propelled by the reliable and smooth-shifting Shimano GRX/Ultegra gear combination while hydraulic disc brakes stop with precision, even within the muddiest conditions.
- A high performing gravel bike full of enthusiasm and fun that’s perfect for tackling all manner of terrain and adventures
- Full carbon frameset is responsive, lightweight and robust thanks to its advanced material layup
- Triple Triangle frame format allows the seatstays to “float” to grant vast amounts of vertical compliance
- The carbon fork incorporates a flip-chip to make the handling more stable or more agile
- Multiple mounts for luggage carrying on the frame and fork
- Up to 42mm tyre clearance with a 700c wheel
- WTB ST i23 wheels are robust, have a wide internal rim width and are tubeless-ready tyre compatible
- Shimano GRX/Ultegra gears have a wide range of ratios and are accurate and dependable
- Shimano hydraulic disc brakes stop with accuracy whatever the conditions
- Please note: images are for the illustration of colours and frameset appearance only. The components supplied are as listed within the technical specifications
|Frame||GT Grade carbon frame, Triple Triangle Design featuring floating seatstays, 12x142 thru-axle, flat mount disc (160mm), tapered headtube, Di2 and dropper compatible, PF30|
|Fork||GT Grade carbon fork, tapered carbon steerer, 12x100 thru-axle, flat mount disc (160mm), adjustable flip-chip|
|Headset||FSA No.44, integrated, sealed bearing|
|Bottom Bracket||FSA PressFit 30|
|Stem||GT 3D forged SL alloy, 31.8|
|Handlebar||GT DropTune Super Light, double-butted 6061 alloy, 16° flare|
|Bar Tape||GT Gravel Grip Premium tape|
|Front Brake||Shimano GRX 400 hydro disc, 160mm RT30 rotor|
|Rear Brake||Shimano GRX 400 hydro disc, 160mm RT30 rotor|
|Brake Levers||Shimano GRX 600|
|Front Derailleur||Shimano 105, braze-on|
|Rear Derailleur||Shimano Ultegra RX800 Shadow Plus, 11-speed|
|Shift Levers||Shimano GRX 600, 11-speed|
|Chain||KMC X11, 11-speed|
|Cassette||Shimano 105, 11-34, 11-speed|
|Crankset||FSA Omega Adventure, 46/30 chainrings|
|Front Wheel||Rim - WTB ST i23 TCS 2.0, 28 hole, tubeless-ready / Hub - Formula CL-712, 12x100mm thru-axle, Center Lock / Spokes - Stainless Steel, 14g|
|Rear Wheel||WTB ST i23 TCS 2.0, 28 hole, tubeless-ready / Hub - Formula RXC-400, 12x142mm thru-axle, Center Lock / Spokes - Stainless Steel, 14g|
|Front Tyre||WTB Nano TCS Light, 700 x 40c, tubeless-ready clincher|
|Rear Tyre||WTB Nano TCS Light, 700 x 40c, tubeless-ready clincher|
|Saddle||Fabric Scoop Radius Sport, steel rails|
|Seatpost||GT Carbon, 27.2 x 350mm|
|Pedals||Available to be purchased separately|
Built, Checked, Tuned and Tested
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.