CANNONDALE F-SI

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2020 Cannondale F-Si Carbon

The incomprehensible amount of innovation and engineering in the latest Cannondale F-Si boils down to one simple fact: this is the Fastest XC race hardtail ever made. Fastest on the climbs, Fastest on the descents. Faster everywhere. Designed to match the commitment of the XC obsessed rider, from the grass roots to the World Cup.

For many, the XC hardtail remains the purest expression of mountain bike technology. And the F-Si Carbon is the purest of the pure.  Featuring a modern Cross Country geometry – low, flat back with centred weight distribution.

At just 900 grams (size Med, with all paint and hardware), the all-new F-Si is the lightest mountain bike frame Cannondale has ever made. It shaves 80 grams off the previous F-Si, and when you factor in the svelte new Lefty Ocho, you save a whopping 330 grams on the frame and fork.

What’s even more impressive is that, rather than chasing marketing grams, Cannondale’s engineers focused on features that deliver real performance benefits out on the course. Features like Ai and OutFront, or improved compliance, or improved durability. That’s what wins races, not saving the weight of a few sips of water!

The F-Si’s frame is made from Cannondale’s proprietary BallisTec carbon, a sophisticated layup of military-grade fibres and high-impact resins that offers unparalleled levels of stiffness, smoothness, lightness and ultimate robustness.

Featuring a slacker head angle than the previous F-Si adds even more stability and control on sketchy descents. Custom 55mm long fork rake on the Lefty Ocho keeps handling precise and agile at slower speeds.  The Ai offset drivetrain delivers even shorter chainstays than the original, for climb-winning traction and agility, with clearance for big tyres, 2x and 1x chainring compatibility, and a stiffer, stronger rear wheel.

Reach to the head tube is increased slightly for improved control.  An integrated seat binder looks super clean and exposes more seatpost length for improved comfort. While new race-tuned stiffness keeps things super rigid where needed for power transfer, but adds even more bump-eating comfort so you can go harder for longer.

ALL-NEW LEFTY OCHO FORK

The first single-crown, single-sided XC suspension fork in the world saves weight in the most obvious way.  With just one crown and one leg, all material is concentrated where needed for strength and stiffness, making it one of the lightest suspension forks in the world — 250 grams lighter than previous Lefty. Less un-sprung mass than traditional forks for better suspension response. And a tapered steerer for lighter weight and total compatibility.

Suspension is movement. The smoother it can move, the better it can do its job. Insulating you from impacts. Floating through the chop. Tracking over the things that would throw you off. When it comes to smoothness, Ocho stands alone. Fewer friction-causing bushings and seals than any other fork. The supple new Chamber damper. And the new Delta Cage evolution of Lefty’s revolutionary needle bearing telescope assembly. It all adds up to the smoothest fork ever made. No sticking, no binding, no shuddering or hesitation, no matter how hard you push it.

Lefty Ocho has the best overall stiffness of any lightweight XC fork, which is great. But what separates it from the rest is not so much how stiff it is, but rather how it is stiff. Because stiffness, like so many things, is a double-edged sword: Too flexy and you’ve got a noodle that won’t go where it’s told. Too stiff, or stiff in the wrong places, and it wants to ricochet and bounce, instead of float and flow. Ocho’s unique single-crown design, and triangle-in-triangle telescope, give Cannondale unprecedented ability to tailor the stiffness of the fork.

Ai – ASYMMETRIC INTEGRATION

Short chainstays do wonders for traction and nimble handling, but they usually come at a cost. That’s not the case with Cannondale’s proprietary Asymmetric Integration drive-train offset.

By moving the gears and rear triangle over, Cannondale are able to create space that enables them to shorten the stays AND still have clearance for big tires and room for 2x drivetrains if you want.

It even creates a stiffer, stronger rear wheel by evening out the dish.

SPEED RELEASE

A faster kind of thru-axle. Slotted dropout design lets the axle stay in the hub for quicker, easier wheel changes.

Compatible with standard 148×12 hubs, it’s just a better way thru.

Other frame improvements in the new F-Si include:

  • Tapered Headtube – the new F-Si uses a tapered headtube, for better compatibility and lighter weight.
  • Interchangeable Routing Chips – easy-to-use internal cable routing chips allow you to customize your cable routing to your preference.
  • Integrated Seat Binder – a wedge-style seat binder in the seat tube eliminates the collar for a cleaner look and allows more seatpost flex for more comfort.

>  Bikes  >  Cannondale  >  Cannondale F-Si

Cannondale F-Si Carbon

A hardtail like no other. Designed to let you out-kick them on the climbs and out-rip
them on the descents, this ultralight rocket is your ticket to the top of the podium.

2020 F-Si Carbon 5

Key Features:

  • Frame:  F-Si, BallisTec Carbon, SAVE
  • Fork:  RockShox Reba RL, 100mm, Solo Air
  • Groupset:  SRAM NX/SX Eagle 1x, 12-speed
  • Wheelset:  WTB STX i21 TCS with Schwalbe Racing Ray/Ralph Performance 27.5/29 x 2.25″ tyres

Frame: Cannondale F-Si BallisTec Carbon SAVE PF30A tapered head tube Speed Release 12mm thru axle Ai Offset
Forks: RockShox Reba RL 100mm Solo Air 15×110 tapered steerer Ai offset
Headset: Cannondale Integrated 1-1/8 to 1.5 sealed angular contact bearings (Integrated steer stop size small only)
Shifters: SRAM NX Eagle 12-speed
Crank: Truvativ Stylo 6K 34T Ai Custom
Rear Mech: SRAM NX Eagle
Brake Calipers: Shimano MT500 hydro disc 160/160mm RT56 rotors
Brake Levers: Shimano MT500 hydro disc
Chain: SRAM SX Eagle 12-Speed
Cassette: SRAM SX Eagle 11-50 12-speed
B Bracket: SRAM DUB PF30 MTB83
Spokes: Cannondale DT Swiss Champion
Rims: WTB STX i23 TCS 28h tubeless ready
Hubs: Formula 15×110 front 12×148 rear w/ HG driver
Tyres: Schwalbe Racing Ray Performance 29 x 2.25 front Racing Ralph Performance 2.25 rear Addix Compound tubeless ready
Handlebars: Cannondale 3 Flat 6061 double-butted Alloy 8° sweep 3° rise 760mm
Stem: Cannondale 3 3D Forged 6061 Alloy 1-1/8 31.8 7°
Seatpost: Cannondale 3 7075 Alloy 27.2 x 400mm
Saddle: Fabric Scoop Shallow Sport steel rails
Bar tape/Grips: Cannondale Locking Grips
Other: Cannondale Speed Release rear axle

Standard Factory Specification Model

The manufacturer's RRP with standard components is £1899.99 – but to receive our own unbeatable everyday EPIC LOW PRICEplease send us a price request below.

2020 F-Si Carbon 4

Key Features:

  • Frame:  F-Si, BallisTec Carbon, SAVE
  • Fork:  Lefty Ocho, 29″, 100mm, Chamber Damper with cable lockout
  • Groupset:  SRAM NX Eagle 1x, 12-speed
  • Wheelset:  WTB STX i21 TCS with Schwalbe Racing Ray/Ralph Performance 27.5/29 x 2.25″ tyres

Frame: Cannondale F-Si BallisTec Carbon SAVE PF30A tapered head tube Speed Release 12mm thru axle Ai Offset
Forks: Cannondale Lefty Ocho 29 100mm Chamber Damper with cable 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)
Shifters: SRAM NX Eagle 12-speed
Crank: Truvativ Stylo 6K 34T Ai Custom
Rear Mech: SRAM NX Eagle
Brake Calipers: Shimano MT500 hydro disc 160/160mm RT66 rotors
Brake Levers: Shimano MT500 hydro disc
Chain: SRAM NX Eagle 12-Speed
Cassette: SRAM PG-1230 NX Eagle 11-50 12-speed
B Bracket: SRAM DUB PF30 MTB83
Spokes: Cannondale DT Swiss Champion
Rims: WTB STX i21 TCS 28h tubeless ready
Hubs: Cannondale Lefty 60 front Formula 12×148 rear w/ HG driver
Tyres: Schwalbe Racing Ray Performance 29 x 2.25 front Racing Ralph Performance 2.25 rear Addix Compound tubeless ready
Handlebars: Cannondale 3 Flat 6061 double-butted Alloy 8° sweep 3° rise 760mm
Stem: Cannondale 3 3D Forged 6061 Alloy 1-1/8 31.8 7°
Seatpost: Cannondale 3 7075 Alloy 27.2 x 400mm
Saddle: Fabric Scoop Flat Elite cro-mo rails
Bar tape/Grips: Cannondale Locking Grips
Other: Cannondale Speed Release rear axle

Standard Factory Specification Model

The manufacturer's RRP with standard components is £2699.99 – but to receive our own unbeatable everyday EPIC LOW PRICEplease send us a price request below.

2020 F-Si Carbon 3

Key Features:

  • Frame:  F-Si, BallisTec Carbon, SAVE
  • Fork:  Lefty Ocho, 29″, 100mm, Chamber Damper with cable lockout
  • Groupset:  SRAM GX Eagle 1x, 12-speed
  • Wheelset:  Stan’s NoTubes Crest MK3 with Schwalbe Racing Ray/Ralph Performance 27.5/29 x 2.25″ tyres

Frame: Cannondale F-Si BallisTec Carbon SAVE PF30A tapered head tube Speed Release 12mm thru axle Ai Offset
Forks: Cannondale Lefty Ocho 29 100mm Chamber Damper with cable 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)
Shifters: SRAM GX Eagle 12-speed
Crank: Truvativ Stylo 6K 34T Ai Custom
Rear Mech: SRAM GX Eagle
Brake Calipers: SRAM Level T hydro disc 160/160mm Centerline rotors
Brake Levers: SRAM Level T hydro disc
Chain: SRAM GX Eagle 12-Speed
Cassette: SRAM PG-1230 NX Eagle 11-50 12-speed
B Bracket: SRAM DUB PF30 MTB83
Spokes: Cannondale DT Swiss Competition
Rims: Cannondale Stan’s NoTubes Crest MK3 28h tubeless ready
Hubs: Cannondale Stan’s NoTubes Neo Lefty front Neo 12×148 rear w/HG driver
Tyres: Schwalbe Racing Ray Performance 29 x 2.25 front Racing Ralph Performance 2.25 rear Addix Compound tubeless ready
Handlebars: Cannondale 2 Flat butted 2014 Alloy 8° sweep 3° ride 760mm
Stem: Cannondale 3 3D Forged 6061 Alloy 1-1/8 31.8 7°
Seatpost: Cannondale 2 Carbon 27.2 x 400mm
Saddle: Fabric Scoop Flat Elite cro-mo rails
Bar tape/Grips: Cannondale Locking Grips
Other: Cannondale Speed Release rear axle

Standard Factory Specification Model

The manufacturer's RRP with standard components is £3099.99 – but to receive our own unbeatable everyday EPIC LOW PRICEplease send us a price request below.

2020 F-Si Carbon 2

Key Features:

  • Frame:  F-Si, BallisTec Carbon, SAVE
  • Fork:  Lefty Ocho Carbon, 29″, 100mm, Chamber Damper with cable lockout
  • Groupset:  Shimano XT/XTR 1x, 12-speed
  • Wheelset:  HollowGram 23, Superlight Hi-Impact Carbon with Schwalbe Racing Ray/Ralph 27.5/29 x 2.25″, Snake Skin tyres
Frame: BallisTec Carbon, SAVE, PF30-83, tapered head tube, Speed Release 12mm thru axle, Ai Offset
Fork: Lefty Ocho Carbon, 27.5/29″, 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 50/55mm offset
Rims HollowGram 23, Superlight Hi-Impact Carbon, tubeless ready, 28h, 23mm inner width
Spokes: Formula Grand Forza
Front Hub: Lefty 60
Front Tire (F) Schwalbe Racing Ray 27.5/29 x 2.25″, Snake Skin, Addix Speedgrip Compound, tubeless ready
Rear Hub: Hollowgram w/ DT internals 12×148 w/ Micro Spline
Rear: Tire (R) Schwalbe Racing Ralph 27.5/29 x 2.25″, Snake Skin, Addix Speed Compound, tubeless ready
Crank: HollowGram, BB30 w/X-Sync® SpideRing, 34T, Ai offset
Bottom Bracket: Cannondale Alloy PressFit30
Chain: Shimano XT, 12-speed
Rear Cogs: Shimano XT, 10-51, 12-speed
Front Derailleur: Null
Rear Derailleur: Shimano XTR, Shadow Plus
Shifters: Shimano XT, 12-speed
Handlebar: Cannondale 1 Flat, Carbon, 31.8mm, 9deg backsweep, 760mm
Grips: Cannondale Locking Grips
Stem: Cannondale 1, 7075 Alloy, 1-1/8″, 31.8, 7deg
Headset: Integrated, 1-1/8 to 1.5″, sealed angular contact bearings (Integrated steer stop size small only)
Brakes: Shimano Deore XT Race disc, 160/160mm XT rotors
Brake Levers: Shimano Deore XT Race hydro disc
Saddle: Fabric Scoop Flat Race, titanium rails
Seatpost: Cannondale 2, 7075 Alloy, 31.6 x 400mm
Extras: Speed Release rear axle

Standard Factory Specification Model

The manufacturer's RRP with standard components is £4499.99 – but to receive our own unbeatable everyday EPIC LOW PRICEplease send us a price request below.

2020 F-Si Hi-Mod 1

Key Features:

  • Frame:  F-Si, Hi-Mod BallisTec Carbon, SAVE
  • Fork:  Lefty Ocho Carbon, 29″, 100mm, Chamber Damper with cable lockout
  • Groupset:  Shimano XTR 1x, 12-speed
  • Wheelset:  HollowGram 23, Superlight Hi-Impact Carbon with Schwalbe Racing Ray/Ralph 27.5/29 x 2.25″, Snake Skin tyres

Frame: Hi-MOD BallisTec Carbon, SAVE, PF30-83, tapered head tube, Speed Release 12mm thru axle, Ai Offset
Fork: Lefty Ocho Carbon, 29″, 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 55mm offset
Rims: HollowGram 23, Superlight Hi-Impact Carbon, tubeless ready, 28h, 23mm inner width
Spokes: DT Swiss Competition Race
Front Hub: Lefty 60
Front Tire: (F) Schwalbe Racing Ray 27.5/29 x 2.25″, Snake Skin, Addix Speedgrip Compound, tubeless ready
Rear Hub: Hollowgram w/ DT internals 12×148 w/ Micro Spline
Rear Tire: (R) Schwalbe Racing Ralph 27.5/29 x 2.25″, Snake Skin, Addix Speed Compound, tubeless ready
Crank: HollowGram, BB30 w/X-Sync® SpideRing, 34T, Ai offset
Bottom Bracket: Cannondale Alloy PressFit30
Chain: Shimano XTR, 12-speed
Rear Cogs: Shimano XT, 10-51, 12-speed
Front Derailleur: Null
Rear Derailleur: Shimano XTR, Shadow Plus
Shifters: Shimano XTR, 12-speed
Handlebar: ENVE M5, Carbon, 760mm, 31.8mm, 5mm rise, 9deg sweep
Grips: Cannondale Locking Grips
Stem: Cannondale 1, 7075 Alloy, 1-1/8″, 31.8, 7deg
Headset: Integrated, 1-1/8 to 1.5″, sealed angular contact bearings (Integrated steer stop size small only)
Brakes: Shimano XTR Race, 160/160mm RT86 rotors
Brake Levers: Shimano XTR Race hydro disc
Saddle: Fabric Scoop Flat Race, titanium rails
Seatpost: ENVE Carbon, 27.2 x 400mm, 0mm offset
Extras: Speed Release rear axle

Standard Factory Specification Model

The manufacturer's RRP with standard components is £5999.99 – but to receive our own unbeatable everyday EPIC LOW PRICEplease send us a price request below.

2020 F-Si Hi-Mod World Cup

Key Features:

  • Frame:  F-Si, Hi-MOD BallisTec Carbon, SAVE
  • Fork:  Lefty Ocho Carbon, 29″, 100mm, Chamber Damper with cable lockout
  • Groupset:  SRAM XX1 1x, 12-speed
  • Wheelset:  ENVE M525 Carbon with Schwalbe Racing Ray/Ralph 27.5/29 x 2.25″, Snake Skin tyres

Frame: Hi-MOD BallisTec Carbon, SAVE, PF30-83, tapered head tube, Speed Release 12mm thru axle, Ai Offset
Fork: Lefty Ocho Carbon, 29″, 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 55mm offset
Rims: ENVE M525 Carbon, 24h, tubeless ready
Spokes: DT Swiss Aerolite (Ai Offset dish – rear)
Front Hub: Lefty 60
Front Tire: (F) Schwalbe Racing Ray 27.5/29 x 2.25″, Snake Skin, Addix Speedgrip Compound, tubeless ready
Rear Hub: DT Swiss C36 12×148 w/ XD driver
Rear Tire: (R) Schwalbe Racing Ralph 27.5/29 x 2.25″, Snake Skin, Addix Speed Compound, tubeless ready
Crank: SRAM XX1 Eagle DUB, 34T, Ai offset
Bottom Bracket: SRAM DUB PF30 MTB83
Chain: SRAM XX1 Eagle, 12-speed
Rear Cogs: SRAM XG-1299, 10-50, 12-speed
Front Derailleur: Null
Rear Derailleur: SRAM XX1 Eagle AXS
Shifters: SRAM Eagle AXS, 12-speed
Handlebar: ENVE M5, Carbon, 760mm, 31.8mm, 5mm rise, 9deg sweep
Grips: Cannondale Locking Grips
Stem: Cannondale 1, 7075 Alloy, 1-1/8″, 31.8, 7deg
Headset: Integrated, 1-1/8 to 1.5″, sealed angular contact bearings (Integrated steer stop size small only)
Brakes: SRAM Level Ultimate hydro disc, 160/160mm Centerline rotor
Brake Levers: SRAM Level Ultimate hydro disc
Saddle: Prologo Zero II, Tirox rails
Seatpost: ENVE Carbon, 27.2 x 400mm, 0mm offset
Extras: Speed Release rear axle

Standard Factory Specification Model

The manufacturer's RRP with standard components is £8999.99 – but to receive our own unbeatable everyday EPIC LOW PRICEplease send us a price request below.

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