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Light, but it's no lightweight.
A pure XC race mountain bike. Loaded with performance features that ensure victory, all while weighing next to nothing.
Where it thrives
In competition, up and down hills
What it's built for
Speed, agility, handling
Highlights
- BallisTec Carbon frame / Lefty Ocho 100mm fork / Integrated Cannondale App connectivity
- SRAM NX/SX Eagle 12-speed drivetrain
- Shimano MT500 hydraulic disc brakes
A faster, better thru-axle. The slotted dropout design lets the axle stay in the hub for quicker, easier wheel changes. Compatible with standard 148x12 thru-axle hubs. It’s a better way thru.
Proprietary Ai offset drivetrain delivers super short chainstays for climb-winning traction and agile handling, without sacrificing mud/tire clearance or limiting you to single ring set-ups.
Confidently stable on hectic descents, yet quick and nimble everywhere else - OutFront Steering Geometry gives you the best of both worlds.
Cannondale's premium high-strength, high-stiffness carbon construction. An advanced blend of intermediate, high, and ultra-high modulus fibers yields a frame that’s extremely light, durable, and lively.
Specs
Details
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Platform
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Model NameF-Si Carbon 4
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Model CodeC25501M
Frameset
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FrameBallisTec Carbon, SAVE, PF30-83, tapered head tube, Speed Release 12mm thru axle, Ai Offset
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ForkLefty Ocho, 100mm, Chamber Damper with remote lockout, OppO Spring System, tapered steerer, 55mm offset
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HeadsetIntegrated, 1-1/8 to 1.5", sealed angular contact bearings (Integrated steer stop size small and extra small only)
Drivetrain
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Rear DerailleurSRAM NX Eagle
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ShiftersSRAM NX Eagle, 12-speed
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ChainSRAM SX Eagle, 12-speed
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CrankSRAM X1-1000 Eagle DUB, 34T, Ai offset
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Rear CogsSRAM SX Eagle, 11-50, 12-speed
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Bottom BracketSRAM DUB PF30 MTB83
Brakes
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BrakesShimano MT500 hydraulic disc, 160/160mm RT54 rotors
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Brake LeversShimano MT500 hydraulic disc
Wheels
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Front HubLefty 60
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Rear HubShimano MT400, 12x148mm thru-axle
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Brake TypeDisc
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RimsWTB STX i23 TCS, 32h, tubeless ready
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SpokesDT Swiss Competition
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Tire Size2.25
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Wheel Size29
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Tires(F) Schwalbe Racing Ray Performance, 29x2.25", Addix Compound, tubeless ready, (R) Schwalbe Racing Ralph Performance, 29x2.25", Addix Compound, tubeless ready
Components
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HandlebarCannondale 2 Flat, butted 2014 Alloy, 31.8mm, 3° rise, 8° sweep, 760mm
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StemCannondale 3, 6061 Alloy, 31.8, 7°
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GripsFabric FunGuy
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SaddleFabric Scoop Shallow Sport, steel rails
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SeatpostCannondale C3, 6061 Alloy, 27.2x350mm (S), 400mm (M-XL)
Connectivity
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Wheel SensorCannondale Wheel Sensor
Please note that, based on component availability and other factors, specifications are subject to change without notice.
Geometry
Mountain Look Smart
See Helmets
