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.
Cannondale Topstone 3 Gravel Bike 2023
Combining a strong alloy frame, lightweight carbon fork and reliable components, the Cannondale Topstone 3 Gravel Bike is a highly capable, all-terrain choice. The frame includes multiple mounting points for bags, mudguards and bottles, so you can load it up ready for an adventure, or keep it lightweight and fast. OutFront steering geometry creates an agile but stable ride with a slightly longer fork and slacker head angle.
A Shimano Sora 9-speed drivetrain provides reliability and a good range, and Promax Decoder R mechanical disc brakes are reliable in all conditions.
There's plenty of room for changes and upgrades to this high-quality frame, with room for wide tyres up to 45mm and the ability to fit a 27.2mm dropper post.
Highlights
- Strong and reliable Cannondale C2 alloy frame and carbon fork
- Shimano Sora 9-speed shifting
- Powerful Shimano mechanical disc brakes
- Plenty of mounting points for bottles and luggage racks
- Built to accept an internally routed 27.2mm dropper seatpost
- Removable mudguard bridge
- Large volume 37c clincher tyres from WTB offer offroad stability
- Wide-ranging gear ratio is perfect for any terrain
- Clearance for 45mm tyres
- Integrated wheel sensor delivers hyper-accurate speed, route and distance info while you ride, registers your bike, reminds of needed services and more, through the Cannondale app
Technical Specification
| Frame | Cannondale SmartForm C2 Alloy, 12x142 thru-axle, tapered headtube, flat mount disc, BSA threaded BB, flat mount disc, StraightShot internal cable routing, multiple gear/bottle mounts |
| Fork | Cannondale Topstone Carbon, 1-1/8" to 1.5" steerer, 55mm OutFront offset, flat mount disc, internal routing, 12x100 thru-axle, mudguard/gear mounts |
| Headset | Integrated, 1-1/8" - 1-1/2" |
| Bottom Bracket | Cartridge, square taper |
| Stem | Cannondale 3, 6061 Alloy, 31.8, 7° |
| Handlebar | Cannondale 3, butted 6061 alloy, 16° flare drop |
| Front Brake | Promax Decoder R mechanical disc, 160mm rotor |
| Rear Brake | Promax Decoder R mechanical disc, 160mm rotor |
| Brake Levers | Shimano Sora |
| Front Derailleur | Shimano GRX 800, braze-on |
| Rear Derailleur | Shimano GRX 810, Shadow RD+ |
| Shift Levers | Shimano Sora, 9-speed |
| Chain | KMC Z9, 9-speed |
| Cassette | SunRace, 11-34t, 9-speed |
| Crankset | FSA Tempo Adventure, 46/30t |
| Front Wheel | GXD 1.0 rim | Formula alloy, 12x100mm hub | stainless steel, 14-gram spokes |
| Rear Wheel | GXD 1.0 rim | Formula alloy, 12x142mm hub | stainless steel, 14-gram spokes |
| Front Tyre | WTB Riddler Comp, 700 x 37c, clincher |
| Rear Tyre | WTB Riddler Comp, 700 x 37c, clincher |
| Saddle | Fizik Aliante Delta, S-alloy rails |
| Seatpost | Cannondale 4, 6061 Alloy, 27.2 x 350mm |
| Pedals | Available to be purchased separately |
| Accessories | Removable 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.