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.
Cyclescheme can save you up to 39% on a bike and accessories. Visit our Cycle to Work Scheme page to learn more and claim.
Product Highlights
Cannondale's highest grade of carbon makes the frameset ultralight, responsive and comfortable.
Electronic gear shifting and the finest materials combine to grant a pro-level performance.
An aero frameset works in unison with sculpted bars, stem and seatpost to reduce drag markedly.
Deep and wide carbon rims lower drag and rolling resistance to increase speed in all conditions.
Cannondale SystemSix HiMOD Dura-Ace Di2 Disc Road Bike 2021
Merging an aerodynamically chiselled design with state of the art composites and range-topping components, the Cannondale SystemSix HiMod Dura-Ace Di2 Disc Road Bike is the perfect partner for when attacking any furiously paced race or group ride.
The frameset's design has been meticulously tuned via the wind tunnel and real-world riding scenarios and this partners the high modulus carbon construction to deliver incredibly low drag, sharp levels of responsiveness and sublime levels of comfort. The frameset is complemented by the aero seatpost, handlebar and stem to result in a performance that is the quickest choice for any rider when thundering across valleys, sprinting for the line or for when climbing gradients of up to 6%. The completely internal cable routing donates a crisp aesthetic and also lowers drag further while clearance for up to 30mm wide tyres grants the prospect of the extra compliance and traction bestowed by wider rubber.
Collaborating seamlessly with the frameset is the HollowGram 64 KNOT wheelset and its aerodynamically refined, 64mm deep, full carbon rims. These rims slice through the air, but their wide, bulbous profile works to calm turbulent air and increase control no matter the wind yaw angle. These rims also sport a broad internal width to infuse lower tyre rolling resistance and greater rough road resilience.
Electronically actuated, the top-of-the-range Shimano Dura-Ace Di2 configuration precisely flicks through the vast range of gears to facilitate passage across any route. The hydraulic disc brakes, also Dura-Ace, thoroughly complete the build by donating powerful and modulated stopping power, even in the worst of weather conditions.
Highlights
- An aerodynamically refined road bike that slices through the air to deliver the fastest possible ride experience across flat to heavily rolling parcours
- Full BallisTec Hi-MOD carbon frameset is light, stiff and compliant
- Drastically tuned frame tube profiles lower aerodynamic drag significantly to help any rider go faster on the flat and on any climb with an average gradient of up to 6%
- Aero seatpost, handlebar and stem complement the wind cutting frameset
- Hidden and clean cable routing inside the frame offers minimal drag but easy serviceability
- Clearance for up to 30mm tyres gives extra comfort and enhanced control across any road surface
- Race inspired geometry donates precise and composed handling
- HollowGram 64 KNOT wheelset has 64mm deep carbon rims that possess aerodynamically tuned profiles for lowered drag and increased crosswind stability
- Range topping Shimano Dura-Ace Di2 electronic 11-speed gears are accurate and reliable
- Shimano hydraulic disc brake set up bestows confidence inspiring stopping power and control
Technical Specification
| Frame | Cannondale BallisTec Hi-MOD Carbon, integrated cable routing with Switchplate, SAVE, PF30a, flat mount disc, 12x142 Speed Release thru-axle |
| Fork | Cannondale BallisTec Hi-MOD Carbon, 1-1/8” - 1-1/4” steerer, 12x100mm Speed Release thru-axle, flat mount disc, 55mm offset (47-51cm frame sizes) 45mm offset (54-62cm frame sizes) |
| Headset | Cannondale Integrated, 1-1/8” - 1-1/4 |
| Bottom Bracket | Cannondale Alloy PressFit30 |
| Stem | HollowGram KNØT, Alloy with cable cover, -17 degree |
| Handlebar | HollowGram KNØT SystemBar, Carbon, 8-degree pitch adjust |
| Bar Tape | Cannondale Bar Tape, 3.5mm |
| Front Brake | Shimano Dura-Ace Di2 hydraulic disc brake, 160mm RT900 disc rotors |
| Rear Brake | Shimano Dura-Ace Di2 hydraulic disc brake, 140mm RT900 disc rotors |
| Brake Levers | Shimano Dura-Ace Di2, hydraulic disc brake |
| Front Derailleur | Shimano Dura-Ace Di2, braze-on |
| Rear Derailleur | Shimano Dura-Ace Di2, 11-speed |
| Shift Levers | Shimano Dura-Ace Di2, 11-speed |
| Chain | Shimano Dura-Ace, 11-speed |
| Cassette | Shimano Dura-Ace, 11-30, 11-speed |
| Crankset | HollowGram SiSL2, BB30a, OPI SpideRing, 52/36 chainrings |
| Front Wheel | HollowGram 64 SL KNØT, Carbon, 20h, 64mm deep, 21mm internal width, tubeless-ready rim, HollowGram KNØT, sealed bearing 12x100mm Centre Lock hub, DT Swiss Aerolite x 20 spokes |
| Rear Wheel | HollowGram 64 SL KNØT, Carbon, 24h, 64mm deep, 21mm internal width, tubeless-ready rim, HollowGram KNØT, 12x142mm Centre Lock with DT Swiss 240 internals hub, DT Swiss Aerolite x 24 spokes |
| Front Tyre | Vittoria Rubino Pro Speed, 700 x 25c, clincher |
| Rear Tyre | Vittoria Rubino Pro Speed, 700 x 25c, clincher |
| Saddle | Prologo Dimension Nack NDR, 143mm width, carbon rails |
| Seatpost | HollowGram 60 KNØT Carbon, 330mm |
| Pedals | Available to be purchased separately |
| Accessories | Cannondale wheel sensor |
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 or contact Customer Care. We do not install accessories to bikes, including mudguards.