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.
Save up to 47% with any one of our 11 Cycle to Work partners, and get the health benefits of a new bike in exchange for tax free salary sacrifice. To find out more about our various partners and how to apply click here.
Choose between Free Bike Delivery - to your home or place of work - or our new Premier Bike Delivery Service £99.99 and have your bike delivered "ready to ride" and set up to your measurements with seatpost and pedals adjusted on arrival by a qualified bike mechanic. Either way, our Customer Care team will be in touch to arrange a delivery date to suit you.
We've partnered with Laka to offer you 30 days free bike Insurance on your new bike purchase over £400. Click here for more info and find out how to claim.
Cannondale Topstone 105 Disc Gravel Road Bike 2020
With something of a do-it-all mentality, the Cannondale Topstone 105 Disc Gravel Bike is ready for intrepid souls to go explore roads less travelled. Alternatively, it's no less capable of hacking through traffic and acting as a durable, robust and reliable commuting bike. Ride to the office during the week and ride to the hills when the weekend rolls around. Kitted out with trusted Shimano 105 components with plenty of gears to tackle long tough climbs and with enough space in the frame for tyres up to 42mm wide, this bike will eat up the gravel miles.
The geometry feels stable and controlled, but with a slight raciness akin to the endurance road bikes in the Cannondale range, so there's a keenness to ride fast when required. And when you need to strap on your bike packing gear there are multiple bottle cage positions plus mounts on the top tube, so that all your kit is always where you need it.
Features
- Built with plenty of room for tyres up to 42mm wide, for comfort, grip and adventurous capability
- A slack head angle paired with a long 55mm fork rake delivers great stability at speed
- Multiple bottle cage positions on the downtube mount let you configure for big frame bags
- Full carbon fork, with tapered steerer and 12mm thru-axle
- Full Shimano 105 groupset
Technical Specification
| FRAME | Cannondale SmartForm C2 Alloy, 142x12 thru-axle, tapered headtube, flat mount disc, StraightShot internal cable routing, multiple gear/bottle mounts |
| FORK | Cannondale Full Carbon, 1-1/8” to 1-1/4” steerer, 55mm OutFront offset, flat mount disc, internal routing, 12x100 thru-axle |
| STEM | Cannondale 3, 6061 alloy, 31.8, 7° |
| HANDLEBAR | Cannondale 3, butted 6061 alloy, 16 deg flare drop |
| GRIPS | Cannondale Grip Bar Tape with Gel, 3.5mm |
| FRONT BRAKE | Shimano 105 hydro disc, 160mm RT56 rotor |
| REAR BRAKE | Shimano 105 hydro disc, 160mm RT56 rotor |
| BRAKE LEVERS | Shimano 105 hydro disc |
| FRONT DERAILLEUR | Shimano 105, 31.8 clamp |
| REAR DERAILLEUR | Shimano 105 GS |
| SHIFT LEVERS | Shimano 105 hydro disc, 2x11 |
| CASSETTE | Shimano 105, 11-34t, 11-speed |
| CRANKSET | FSA Omega ME alloy, 46/30T |
| CHAIN | KMC X11, 11-speed |
| FRONT WHEEL | WTB ST i23 TCS, 28h, tubeless ready, Formula RX-512, 12x100 centerlock |
| REAR WHEEL | WTB ST i23 TCS, 28h, tubeless ready, Formula RX-142, 12x142 centerlock |
| FRONT TYRE | WTB Riddler TCS Light, 700x37c, tubeless-ready |
| REAR TYRE | WTB Riddler TCS Light, 700x37c, tubeless-ready |
| SADDLE | Fabric Scoop Sport, 143mm width, steel rails |
| SEATPOST | Cannondale 3, 6061 alloy, 27.2 x 350mm |
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. 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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