Our stores remain open and you can shop online. Find out more
New To Sigma Sports?
£10 off £100* - code SIGNUP10

Cannondale F-Si HiMod 1 Mountain Bike 2021

★★★★★ ★★★★★

Select a colour and size to view stock availability

Find My Size
F-Si HiMod 1 Mountain Bike 2021

We're sorry, but unfortunately, we're unable to ship this item to your country

Product ID: 1273727

Why buy your bike from Sigma Sports?

sigma sports expert advice
Expert Advice

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.

sigma sports built checked tuned and tested
Built, Checked, Tuned and Tested

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.

Free Bike Delivery

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.

sigma sports cycle to work scheme
Cycle to Work Scheme

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


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.

Cannondale F-Si HiMod 1 Mountain Bike 2021

The Cannondale F-Si HiMod 1 Mountain Bike is a top-tier XC steed crafted with a featherweight frame that's just 900 grams, making it Cannondale's lightest frame to date. Lightweight doesn't mean compromising other areas though, with the F-Si HiMod remaining compliant and agile as a result of the Ai Offset drivetrain and OutFront steering geometry, which makes for nimble handling and confident stability. Stiffness is enhanced with the addition of thru-axles, so power transfer is efficient for rapid climbs and putting the hammer down in a sprint. 

The Lefty Ocho fork provides 100mm of travel to rumble over rugged surfaces smoothly, keeping handling precise and weight low. Premium Shimano XTR and XT 12-speed components make for snappy shifting that clicks through the wide range of gears with rapid accuracy, and Shimano XTR hydraulic disc brakes keep speed manageable, offering sure stopping power come rain or shine. 


  • Asymmetric Integration drivetrain for podium-level traction and clearance
  • Proprietary BallisTec carbon is custom-tuned for rigidity, compliance and weight-saving
  • Premium Shimano XTR hydraulic disc brakes
  • Tapered head tube
  • Cannondale Lefty Ocho Carbon 100mm fork
  • Clean, configurable internal cable routing
  • Speed Release rear axle
  • The integrated wheel sensor delivers hyper-accurate speed, route and distance info, registers your bike, reminds you of needed servicing and more, all through the free Cannondale App

Technical Specification

Frame Cannondale BallisTec Hi-Mod Carbon, SAVE, PF30-83, tapered head tube, Speed Release 12mm thru axle, Ai Offset
Fork Cannondale Lefty Ocho Carbon, 100mm, Chamber Damper with remote lockout, OppO Spring System, tapered steerer, 55mm offset
Headset Cannondale Integrated, 1-1/8 to 1.5”, sealed angular contact bearings (Integrated steer stop size small only)
Bottom Bracket Cannondale Alloy PressFit30
Stem Cannondale 1, 7075 Alloy, 1-1/8”, 31.8, 7°
Handlebar Cannondale 1 Flat, Carbon, 31.8mm, 9° back, 760mm
Grips ESI Chunky Silicone, 32mm diameter
Front Brake Shimano XTR hydraulic disc, 160/160mm Ice Tech rotors
Rear Brake Shimano XTR hydraulic disc, 160/160mm Ice Tech rotors
Brake Levers Shimano XTR hydraulic disc
Rear Derailleur Shimano XTR
Shift Levers Shimano XTR, 12-speed
Chain Shimano XT, 12-speed
Cassette Shimano XT, 10-51, 12-speed
Crankset Cannondale HollowGram, BB30a, OPI SpideRing, 34T, Ai Offset
Front Wheel Cannondale HollowGram Lefty 60 hub, HollowGram 25, Superlight Hi-Impact Carbon, 28h, 25mm IW, tubeless ready rim, DT Swiss Competition Race, straight-pull spokes
Rear Wheel Cannondale HollowGram with DT Swiss Star Ratchet internals, 12x148mm hub, HollowGram 25, Superlight Hi-Impact Carbon, 28h, 25mm IW, tubeless ready rim, DT Swiss Competition Race, straight-pull spokes
Front Tyre Schwalbe Racing Ray EVO, 29 x 2.25”, SnakeSkin, Addix Speedgrip, tubeless ready clincher
Rear Tyre Schwalbe Racing Ralph EVO, 29 x 2.25”, SnakeSkin, Addix Speed, tubeless ready clincher
Saddle Prologo Dimension NDR, Tirox rails
Seatpost ENVE Carbon, 27.2 x 400mm, 0mm offset
Pedals (if not included, copy/paste “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 specified), 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. We do not install accessories to bikes, including mudguards.

Cannondale F-Si HiMod 1 Mountain Bike 2021 Sizing

Close menu