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Description
The Cannondale Topstone 2 Alloy 2x Gravel Bike is a reliable and fun choice for exploring, offering generous tyre capacity, ample gear mounts, stable yet agile steering, and a lightweight frame with a carbon fork for confident riding over rough terrain.
Built for bikepacking and mixed-surface adventures, it features a SmartForm C2 Alloy frame with clearance for 45 mm tyres and a Topstone Carbon fork with three mount bosses on each leg for added versatility. The Shimano 10-speed GRX RX400 gravel groupset delivers light, accurate shifting, paired with GRX RX400 hydraulic disc brakes for reliable stopping power. A 2x setup provides more gears and improved shifting precision over rolling terrain, while the GXD 1.0 tubeless-ready wheelset with Shimano TC500 hubs and WTB Riddler 700 x 37c tyres enhances grip and control. Designed to accept an internally routed 27.2 mm dropper seatpost for improved handling on descents, it also features a Cannondale 3 6061 Alloy seatpost and flared bar for a sturdy, reliable feel.
Frame/Fork | Topstone, lightweight SmartForm C2 Alloy, 12x142 thru-axle, tapered headtube, BSA threaded BB, flat mount disc, StraightShot internal cable routing, multiple gear/bottle mounts |
Fork | Topstone Carbon, 1-1/8" to 1.5" steerer, 55mm OutFront offset, flat mount disc, internal routing, 12x100 thru-axle, fender/gear mounts |
Headset | Integrated, 1-1/8" - 1.5" |
Wheelset | GXD 1.0, 28h, 23mm internal width, tubeless ready |
Front Hub | Shimano TC500, 12x100mm, centerlock |
Rear Hub | Shimano TC500, 12x142mm, centerlock |
Spokes | Stainless Steel, 14g |
Tyres | WTB Riddler TCS Light, 700x37c, tubeless ready |
Shifters/Brake Levers | Shimano GRX 400, 10-speed, hydraulic disc |
Crankset | Shimano GRX 400, 46/30 |
Bottom Bracket | Shimano BSA 68 |
Chain | Shimano HG54, 10-speed |
Front Derailleur | Shimano GRX 400 |
Rear Derailleur | Shimano GRX 400, Shadow RD+ |
Cassette | Shimano HG500, 11-32, 10-speed |
Brakes | Shimano GRX 400 hydraulic disc |
Rotor Size | 160mm (Front) / 160mm (Rear) |
Cockpit | Cannondale 3, butted 6061 Alloy, 16-degree flare drop |
Bar Tape | Cannondale Knurl Cork, 2.7mm |
Stem | Cannondale 3, 6061 Alloy, 31.8, 7° |
Saddle | Selle Royal SRX Open |
Seatpost | Cannondale 3, 6061 Alloy, 27.2x350mm |
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. For hassle-free home delivery and bike set-up from a qualified mechanic use our Premier Delivery Service.
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.
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Important Update for Our Canadian Customers
We regret to inform you that shopping on Sigma Sports is temporarily unavailable for customers based in Canada.
We understand how disappointing this may be and sincerely apologize for any inconvenience caused. Please rest assured that we are actively exploring solutions to resume service and find the best way to support our Canadian community.
We appreciate your patience and understanding during this time, and we look forward to welcoming you back as soon as possible.
If you require any further assistance, please reach out to the customer services team
— The Sigma Sports Team