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.
The BallisTec carbon frame is light, stiff and compliant for a lively but composed ride.
The lightweight Kingpin system at the rear of the frame gives up to 30mm of plush suspension.
The carbon construction dampens impacts and provides instant steering response.
Consistent and powerful, this bottom bracket motor unit assists on the longest and hardest rides.
Cannondale Topstone Neo Carbon 4 Disc Electric Gravel Road Bike 2021
The Cannondale Topstone Neo Carbon 4 Disc Electric Gravel Road Bike is a capable, comfortable disc brake-equipped e-gravel adventurer. When the going gets tough, the Bosch Performance Line CX battery system provides a welcome 250 watts of assistance and is easily removed from the downtube for charging after your weekend excursions. Its BallisTec Carbon frame keeps weight low and resilience high for a durable bike you can be confident in over a multitude of surfaces. Cannondale has foregrounded balance with their Dialed Endurance Fit; upright enough to cover those longer miles and demanding off-road terrain, without compromising a more aggressive position that allows you to be rapid when required.
The 10-speed Shimano Deore cassette is paired with a 46/30T chainring, providing a wide range of gearing options to get you over those tougher gradients. WTB's lightweight 28-hole alloy rims are durable, tubeless-ready and paired with the versatile WTB Riddler Comp tyres, providing both speed and traction when you need it.
- Fully mudguard ready. A removable mudguard bridge on the rear stays is there when you need it, gone when you don't
- Speed Release Equipped. Speed Release thru-axles offer the stiffness and solid feel of a thru-axle, with the easy use of a quick-release axle
- Easy Internal Cable Routing. With Cannondale's DirectLine cable routing, an internal tube guides the cable and housing through the frame, from entry to exit for headache-free service
- An integrated wheel sensor delivers hyper-accurate speed, route and distance info, registers your bike, reminds you of needed services and more, all through the free Cannondale App
- Topstone Carbon comes with 700 x 37c tyes for great road speed and gravel grip
- LockR Pivot. Kingpin's LockR thru-axle pivot locks the left and right seat stays together, preventing independent rotation for a solid feel and instantaneous response
|Frame||Cannondale BallisTec Carbon Frame, removable downtube battery, Kingpin suspension system, 12x148 thru-axle, dropper post compatible|
|Fork||Cannondale BallisTec Full Carbon, 1-1/8" to 1-1/4" steerer, 55mm OutFront offset, flat mount disc, internal routing, 12x110 thru-axle|
|Headset||Integrated, 1.5" lower to 1-1/8" upper with reducer, 25mm Alloy top cap|
|Stem||Cannondale 2, 6061 Alloy, 31.8, 7°|
|Handlebar||Cannondale 3, butted 6061 alloy, 16° flare drop|
|Grips||Cannondale Bar Tape, 3.5mm|
|Brakes||Shimano GRX hydraulic disc, 160mm RT54 rotors|
|Brake Levers||Shimano GRX hydraulic disc|
|Front Derailleur||Shimano GRX, braze-on|
|Rear Derailleur||Shimano GRX 400, Shadow Plus|
|Shift Levers||Shimano GRX 400, 2x10|
|Cassette||Shimano HG500, 11-34t, 10-speed|
|Crankset||FSA Bosch E-Bike, 46/30T|
|Front Wheel||WTB ST TCS i23 28-hole tubeless-ready clincher rim, Formula CSG-1905, 12x110mm thru-axle hub, 28 stainless steel 14-gram spokes|
|Rear Wheel||WTB ST TCS i23 28-hole tubeless-ready clincher rim, Shimano MT400 12x148mm thru-axle hub, 28 stainless steel 14-gram spokes|
|Spokes||Stainless steel, 14-gram|
|Front Tyre||WTB Riddler Comp, 700 x 37c clincher|
|Rear Tyre||WTB Riddler Comp, 700 x 37c clincher|
|Saddle||Fabric Scoop Shallow Sport, steel rails|
|Seatpost||Promax SP-2032, Alloy, 27.2|
|Pedals||Available to be purchased separately|
|Drive Unit||Bosch Performance Line CX 250W|
|Battery||Bosch PowerTube 500Wh|
|Electric assisted speed limit||15.5 mph / 25 km/h|
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.