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Cannondale F-Si Carbon 5 2021 Mountain Bike

About the product This product is now out of stock



About the productCannondale F-Si Carbon 5 Hardtail Mountain Bike, In Cashmere Black & White 2021

Even though the Cashmere colourway gives it a retro vibe, the 2021 F-Si Carbon 5 is a true modern racing weapon. An aggressive geometry, a carbon fibre frame and lightweight components make this an excellent cross country mountain bike that does a great job at both short races and longer marathons. And it just looks stunning, regardless of which angle you’re looking at it from.


Detailed explanation

Based on the BallisTec Carbon frame, the F-Si Carbon 5 checks all the boxes for a lightweight racing bike. You get the SAVE micro-suspension rear triangle, as well as a Speed Release 12mm thru-axle, in an overall very lightweight package that’s ready for your next racing weekend. Upfront is Fox’s Float Factory 32 StepCast fork, with 100mm of travel and excellent performance.

Shimano’s MT500 hydraulic disk brakes are paired with a SRAM Eagle drivetrain, with NX Eagle rear derailleur and shifter, and SX Eagle cassette and chain. There’s also the Stylo 6K DUB crankset, with a 34T chainring and Ai offset. This gives you a 12-speed drivetrain that’s incredibly easy to maintain and keep running while performing admirably when you’re charging up hills on your next XC race.

The wheels are a stiff combination that doesn’t weigh too much and performs very well. And they’re wrapped in Schwalbe’s Performance series tyres, with a Racing Ray at the front and a Racing Ralph at the rear, which means grip is no problem when you’re riding fast.

Add to this Cannondale’s 3 series seat post, stem and handlebar, as well as Fabric’s Scoop Shallow seat and FunGuy grips, and you’re looking at an excellent XC racing bike that’s also comfortable enough for a marathon or two.


Technical features:

  • BallisTec Carbon frame with SAVE micro-suspension is a lightweight and stiff, yet comfortable frame with excellent traction.
  • Fox Float Factory 32 StepCast fork with a remote lockout keeps your front wheel to the ground and helps you get over rough terrain quickly and reliably.
  • 1x12 drivetrain with SRAM shifters and Shimano brakes is a consistent performer and checks all the boxes for weight and performance.
  • Integrated wheel sensor sends data about speed, route and distance to your smartphone without any external sensors.
Great advice & service - thank you Damian. My new Cube Ebike is fantastic and the most fun I have had with clothes on in a while!


CATEGORYMountain Bike
AVAILABILITY Out of stock, please call for availability
Model Number C25601M
Model NameF-Si Carbon 5
FrameBallisTec Carbon, SAVE, PF30-83, tapered head tube, Speed Release 12mm thru axle, Ai Offset
ForkFox Float Factory 32 SC, 100mm, 15x110mm thru-axle, remote lockout, tapered steerer, 51mm offset
RimsWTB STX i23 TCS, 32h, tubeless ready
Hubs(F) Shimano MT400, 15x110mm thru-axle / (R) Shimano MT400 12x148mm thru-axle
SpokesDT Swiss Champion
Tires(F) Schwalbe Racing Ray Performance, 29 x 2.25", Addix Compound, tubeless ready, (R) Schwalbe Racing Ralph Performance, 29 x 2.25", Addix Compound, tubeless ready
CrankTruvativ Stylo 6K DUB, 34T, Ai offset
Bottom BracketSRAM DUB PF30 MTB83
ChainSRAM SX Eagle, 12-speed
Rear CogsSRAM SX Eagle, 11-50, 12-speed
Rear DerailleurSRAM NX Eagle
ShiftersSRAM NX Eagle, 12-speed
HandlebarCannondale 3 Flat, 6061 double-butted Alloy, 31.8mm, 3-deg rise, 8-deg sweep, 760mm
GripsFabric FunGuy
StemCannondale 3, 6061 Alloy, 31.8, 7-deg
HeadsetIntegrated, 1-1/8 to 1.5", sealed angular contact bearings (Integrated steer stop size small and extra small only)
BrakesShimano MT500 hydraulic disc, 160/160mm RT54 rotors
Brake LeversShimano MT500 hydraulic disc
SaddleFabric Scoop Shallow Sport, steel rails
SeatpostCannondale 3, 6061 Alloy, 27.2 x 400mm

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Size guide

Mountain bike sizing chart (Mountain bike)
Feet and Inches Centimetres Inches Size
4' 10" - 5' 2" 148 - 158 13 - 14 XS
5' 2" - 5' 6" 158 - 168 15 - 16 S
5' 6" - 5' 10" 168 - 178 17 - 18 M
5' 10" - 6' 1" 178 - 185 19 - 20 L
6' 1" - 6' 4" 185 - 193 21 - 22 XL
6' 4" - 6' 6" 193 - 198 23 - 24 XXL
Women's mountain bike sizing chart (Mountain bike)
Feet and Inches Centimetres Inches Size
4' 10" - 5' 2" 148 - 158 13 - 14 XS
5' 2" - 5' 6" 158 - 168 15 - 16 S
5' 6" - 5' 10" 168 - 178 17 - 18 M
5' 10" - 6' 1" 178 - 185 19+ L
Cannondale F-Si Carbon 5 Hardtail Mountain Bike, In Cashmere Black & White 2021
Cannondale F-Si Carbon 5 Hardtail Mountain Bike, In Cashmere Black & White 2021

Shipping & returns

Due to the size and weight of most bikes, a charge would apply to shipping remote regions, offshore UK and Ireland.

The courier will require a signature for your delivery. If no one is available to sign for your goods, the courier will leave a card with instruction of where you can collect it.

Working days are Monday to Friday unless otherwise stated. There may be circumstances beyond our control which cause delay and in such circumstances we will endeavour to deliver the goods as soon as they arrive from manufacturers.

Read more about our Shipping & Returns Policy, here.


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