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Cannondale F-Si Carbon 2 29 Mountain Bike 2019

★★★★★ ★★★★★
MSP £4,000.00 Save 29%

From only £426.75 per month

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Product ID: 1054930

The Cannondale F-Si Carbon 2 29" Mountain Bike mixes a BallisTec carbon frame with a 100mm Lefty Ocho fork and an intelligent mix of SRAM and Shimano components to make a lightweight and very rapid cross country bike.

The efficient power transfer and responsive handling are designed to despatch mile after mile of trail with the minimum of effort.

Why buy your bike from Sigma Sports?

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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.

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Free 30-Day Bike Insurance

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.

Cannondale F-Si Carbon 2 29" Mountain Bike 2019

Cannondale’s F-Si Carbon 2 29" Mountain Bike is based around a light BallisTec carbon frame with their AI (Asymmetric Integration) system which shifts the drivetrain outwards by 6mm enabling the chainstays to be shorter than normal without reducing clearance for larger tyres. It also allows the rear wheel to be dished more evenly, thus making it stronger. Complementing the frame is the Lefty Ocho fork with 100mm of travel and remote lockout, providing accurate steering and responsive suspension when required without bobbing under power.

Shimano’s excellent XT hydraulic disc brakes provide excellent all-conditions stopping power and modulation, whilst the drivetrain uses a mixture of SRAM X01 and GX Eagle components. The 10-50 12 speed XG-1275 GX Eagle cassette gives a massive choice of gear ratios when combined with the 34 tooth carbon Truvativ Stylo crankset. Completing the package are a Cannondale carbon rimmed HollowGram wheelset, 760mm carbon handlebar and carbon seatpost.


  • Cannondale BallisTec carbon frame
  • Cannondale Lefty Ocho carbon fork with 100mm travel and cable lockout
  • SRAM X01 and GX Eagle 12-speed drivetrain
  • Shimano XT hydraulic disc brakes
  • Cannondale HollowGram wheels

Technical Specification

FRAME Cannondale F-Si, BallisTec carbon, SAVE, PF30A, tapered head tube, Speed Release 12mm thru axle, Ai Offset
FORK Cannondale Lefty Ocho, 29", 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 55mm offset
STEM Cannondale C1, 7075 Alloy, 1-1/8", 31.8, 7°
HANDLEBAR Cannondale C1 Flat, carbon, 8° sweep, 760mm
FRONT BRAKE Shimano Deore XT hydraulic disc, 160mm XT rotors
REAR BRAKE Shimano Deore XT hydraulic disc, 160mm XT rotors
BRAKE LEVERS Shimano Deore XT hydraulic disc
SHIFT LEVERS SRAM X01 Eagle, 12-speed
CASSETTE SRAM XG-1275, GX Eagle, 10-50t, 12-speed
CRANKSET Truvativ Stylo Carbon, 34t, Ai Custom
FRONT WHEEL Cannondale Lefty 60 hub, HollowGram 23, Superlight Hi-Impact carbon rim, tubeless ready, 28h
REAR WHEEL Cannondale HollowGram 12x148 hub with DT Swiss internals, HollowGram 23, Superlight Hi-Impact carbon rim, tubeless ready, 28h, 23mm inner width
FRONT TYRE Schwalbe Racing Ray 2.25", Snake Skin, Addix Speedgrip Compound, tubeless ready clincher
REAR TYRE Racing Ralph 2.25" rear, Snake Skin, Addix Speedgrip Compound, tubeless ready clincher
SADDLE Fabric Scoop Flat Race, ti rails
SEATPOST Cannondale C1 Full Carbon, 27.2mm
CLAIMED WEIGHT 9.6kg size medium

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.

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