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Description
The Cannondale F-Si HM Mountain Bike is light and agile yet stable, able to climb, descend and navigate fast technical singletrack with equal aplomb. The limited-edition colourway offers a sleek and stealthy aesthetic, and at the core is the BallisTec Hi-MOD carbon frame that's lightweight and durable. It's paired with a Lefty Ocho Carbon 100mm travel fork, and together they ensure a responsive, agile ride with bump-smoothing suspension. Further contributing to a comfortable ride are the SAVE Micro-suspension flex zones that will absorb shock and, consequently, minimise fatigue.
OutFront Steering Geometry is another key aspect, bringing stability when required but keeping the feel nimble and fast. An Ai (Asymmetric Integration) offset drivetrain with shorter chainstays not only improves traction but keeps clearance high for both wide tyres and mud.
Shimano's XTR components take care of both shifting and braking, with the 1x12-speed drivetrain giving you a gear for every scenario - be that when climbing, descending or sprinting. Hydraulic brakes are confidence-inspiring in their power and modulation, no matter if it's dry and dusty or wet and muddy. Within the 29" wheels there's a Cannondale Wheel Sensor that records your ride data with incredible accuracy. Link it to the Cannondale App to sync rides, view stats and gain access to other information.
Frame | Cannondale all-new, F-Si, BallisTec Carbon, SAVE, PF30A, tapered head tube, Speed Release 12mm thru-axle, Ai Offset |
Fork | Cannondale all-new Lefty Ocho Carbon, 29", 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 55mm offset |
Headset | Integrated, 1-1/8 to 1.5", sealed angular contact bearings (Integrated steer stop size small only) |
Bottom Bracket | Cannondale Alloy PressFit30 |
Stem | Cannondale C1, 7075 Alloy, 1-1/8", 31.8, 7° |
Handlebar | Cannondale C1 Flat, Carbon, 8-degree sweep, 760mm |
Grips | Cannondale Locking Grips |
Front Brake | Shimano XTR Race, hydraulic disc 160mm Ice Tech rotor |
Rear Brake | Shimano XTR Race, hydraulic disc 160mm Ice Tech rotor |
Brake Levers | Shimano XTR Race hydraulic disc, carbon lever |
Front Derailleur | N/A |
Rear Derailleur | Shimano XTR, Shadow Plus, 12-speed |
Shift Levers | Shimano XTR, 12-speed |
Cassette | Shimano XTR, 10-51, 12-speed |
Crankset | Cannondale HollowGram Si, BB30 w/X-Sync© SpideRing, 34T |
Chain | Shimano XTR, 12-speed |
Front Wheel | Cannondale Lefty 60 hub / Stan's NoTubes Crest S1, 32h, tubeless-ready rim / HollowGram, double-butted straight pull spokes |
Rear Wheel | Cannondale HollowGram 148x12 hub with DT Swiss internals / Stan's NoTubes Crest S1, 32h, tubeless-ready rim / HollowGram, double-butted straight pull (Ai Offset dish) spokes |
Front Tyre | Schwalbe Racing Ray 29 x 2.25", tubeless-ready clincher |
Rear Tyre | Schwalbe Racing Ralph 2.25", Snake Skin, Addix Speedgrip compound, tubeless-ready clincher |
Saddle | Fabric Scoop Flat Race, titanium rails |
Seatpost | Cannondale C1 full carbon, 27.2 x 350/400mm |
Pedals | Available to be purchased separately |
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.
Highlights
Product Highlights
Ultralight and buttery smooth, the single-sided design is the pinnacle of cross country suspension.
An offset design increases mud clearance, all whilst keeping the chainstays short and nimble.
Ultralight, stiff and ready to race, BallisTec Hi-Mod is Cannondale’s ultimate carbon technology.
Built in flex zones add compliance to reduce fatigue and enhance traction.
Delivery & Returns
Reviews
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Q&A
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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.
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Important Update for Our US Customers
We regret to inform you that due to ongoing challenges related to current US tariffs, shopping on Sigma Sports is temporarily unavailable for customers based in the United States.
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 US 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