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.
A precise, gravel specific gear setup with a wide range of ratios is ideal for any terrain.
Clearance for big volume tyres grants increased traction and comfort over rough terrain.
Cannondale's extensive aluminium expertise makes the frame light, responsive and durable.
The carbon construction dampens impacts and provides instant steering response.
Cannondale Topstone 2 Gravel Bike 2021
With a dedicated gravel groupset and a host of handy mounting points, the Cannondale Topstone 2 Gravel Bike is an adventure-ready option that boasts huge versatility. At the heart of this bike, you'll find a SmartForm C2 Alloy frame with BallisTec Carbon fork; this combination of lightweight handling and durable construction lends itself to the rigours of long days off the beaten track.
The Shimano GRX 400 groupset combines with an FSA Omega AGX+ sub-compact chainset to provide an excellent range of gears that shift instantly and smoothly. The rear derailleur features a clever clutch mechanism to prevent chain slap while riding over rough ground, and the hydraulic disc brakes deliver consistent braking in wet or dry conditions.
Carry a luggage rack, attach mudguards and load on some extra bottles thanks to the abundance of handy mounts around the frame and fork, making this a seriously capable option for bike packing. The WTB wheels and tyres are tubeless-ready, so you can run them at lower pressure for even more comfort too.
- Strong and reliable Cannondale C2 Alloy frame
- BallisTec Carbon fork provides vibration-reducing lightweight steering
- Shimano GRX 400 10-speed gearset
- Powerful Shimano hydraulic disc brakes
- Plenty of mounting points for bottles and luggage racks
- Removeable mudguard bridge
- Large volume 37c clincher tyres from WTB offer offroad stability
- Wide-ranging gear ratio is perfect for any terrain
|Frame||Cannondale SmartForm C2 Alloy, 12x142 thru-axle, tapered headtube, flat mount disc, StraightShot internal cable routing, multiple gear/bottle mounts|
|Fork||Cannondale BallisTec Full Carbon, 1-1/8" to 1-1/4" steerer, 55mm OutFront offset, flat mount disc, internal routing, 12x100 thru-axle|
|Headset||Integrated, 1-1/8" - 1-1/4"|
|Bottom Bracket||FSA Cartridge|
|Stem||Cannondale 3, 6061 Alloy, 31.8, 7°|
|Handlebar||Cannondale 3, butted 6061 alloy, 16 degree flare drop|
|Front Brake||Shimano GRX 400, hydraulic disc, 160mm RT54 rotor|
|Rear Brake||Shimano GRX 400, hydraulic disc, 160mm RT54 rotor|
|Brake Levers||Shimano GRX 400 hydraulic disc|
|Front Derailleur||Shimano GRX 400, braze-on|
|Rear Derailleur||Shimano GRX 400, Shadow RD+|
|Shift Levers||Shimano GRX 400, 10-speed|
|Chain||KMC X10, 10-speed|
|Cassette||Shimano HG500, 11-34t, 10-speed|
|Crankset||FSA Omega AGX+ Alloy, 46/30t|
|Front Wheel||WTB ST i23 TCS, 28h, tubeless-ready rim | Formula cartridge bearing, Center Lock, 12x100mm hub | stainless steel, 14-gram spokes|
|Rear Wheel||WTB ST i23 TCS, 28h, tubeless-ready rim | Formula cartridge bearing, Center Lock, 12x142mm hub | stainless steel, 14-gram spokes|
|Front Tyre||WTB Riddler TCS Light, 700 x 37c, tubeless-ready clincher|
|Rear Tyre||WTB Riddler TCS Light, 700 x 37c, tubeless-ready clincher|
|Saddle||Fabric Scoop Radius Sport, steel rails|
|Seatpost||Cannondale 3, 6061 Alloy, 27.2 x 350mm|
|Pedals||Available to be purchased separately|
|Accessories||Removeable rear mudguard bridge|
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.