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 Al Expert Gravel Bike 2020
With a classic colour and aluminium Triple Triangle design that harks back to the days of the classic GT Zaskar, the Grade Al Expert Gravel Bike is a versatile bike that can be used for commuting, gravel riding and back road exploring. There are plenty of mounts for luggage and bottles as well as mudguards so it can be used happily all year round. By lengthening the floating seatstays all the way up to the top tube rather than joining them to the seat tube, more compliance has been built into the frame, giving improved comfort off-road and less fatigue. In addition, the carbon fork also adds comfort whilst working with the thru-axle to keep the steering straight and true.
Mechanical disc brakes provide the all-weather advantages of hydraulics with simpler maintenance, and the WTB wheels can be set up tubeless if so desired for fewer punctures, increased comfort and more grip thanks to the lower pressures that can be used. A 2x Shimano 105 drivetrain and FSA Vero Pro chainset combine to offer a wide range of gears with closer ratios than a 1x system can give, making finding the right cadence easier without sacrificing hill climbing ability.
- Alloy frame with EnduRoad Triple Triangle design and clearance for 700x42mm tyres
- Carbon fork
- Tektro mechanical disc brakes
- Shimano 105 11-speed 2x11 groupset
- Formula hubs with WTB ST i23 TCS tubeless-ready rims
- Top tube, seatstay and fork leg luggage bosses
|Frame||GT Grade Alloy 700c/650b Frame, EnduRoad Triple Triangle Design featuring floating seatstays, 12x142 thru-axle, flat mount disc (160mm), tapered headtube, external dropper compatible, BSA 73mm, mudguard compatible|
|Fork||GT Grade Carbon fork with tapered carbon steerer, flip chip axle positioning, 12x100 thru-axle, flat mount disc, pannier and mudguard compatible|
|Headset||FSA NO. 44, integrated, sealed bearing|
|Bottom Bracket||Cartridge, square tape|
|Stem||GT 6061 Alloy, 31.8, 7°|
|Handlebar||GT DropTune RS, alloy, 16° flare|
|Front Brake||Tektro mechanical disc, 160mm rotor|
|Rear Brake||Tektro mechanical disc, 160mm rotor|
|Brake Levers||Tektro mechanical disc|
|Front Derailleur||Shimano 105, braze-on|
|Rear Derailleur||Shimano 105 GS, 11-speed|
|Shift Levers||Shimano 105 2x11-speed|
|Cassette||Shimano 105, 11-34, 11-speed|
|Crankset||FSA Vero Pro 48/32|
|Front Wheel||Formula 28h hub with WTB ST i23 TCS, tubeless-ready rim|
|Rear Wheel||Formula 28h hub with WTB ST i23 TCS, tubeless-ready rim|
|Front Tyre||WTB Riddler 700x37c|
|Rear Tyre||WTB Riddler 700x37c|
|Saddle||GT Grade saddle, steel rails|
|Seatpost||GT 6061 Alloy micro adjust, 15mm offset, 27.2mm|
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 specified), 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. We do not install accessories to bikes, including mudguards.