F-Si Carbon 4

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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
          Connected
          An integrated wheel sensor delivers hyper accurate speed, route and distance info, registers your bike, reminds you of needed service and more, all through the free Cannondale App.
          Learn more
          SAVE micro-suspension
          Flex zones and directional carbon layup allow the rear triangle and seat tube to absorb shock for better traction, higher speeds and minimized fatigue, whether seated or standing. Go faster longer.

          Specs

          Details

          • Platform
          • Model Name
            F-Si Carbon 4
          • Model Code
            C25501M

          Frameset

          • Frame
            BallisTec Carbon, SAVE, PF30-83, tapered head tube, Speed Release 12mm thru axle, Ai Offset
          • Fork
            Lefty Ocho, 100mm, Chamber Damper with remote lockout, OppO Spring System, tapered steerer, 55mm offset
          • Headset
            Integrated, 1-1/8 to 1.5", sealed angular contact bearings (Integrated steer stop size small and extra small only)

          Drivetrain

          • Rear Derailleur
            SRAM NX Eagle
          • Shifters
            SRAM NX Eagle, 12-speed
          • Chain
            SRAM SX Eagle, 12-speed
          • Crank
            SRAM X1-1000 Eagle DUB, 34T, Ai offset
          • Rear Cogs
            SRAM SX Eagle, 11-50, 12-speed
          • Bottom Bracket
            SRAM DUB PF30 MTB83

          Brakes

          • Brakes
            Shimano MT500 hydraulic disc, 160/160mm RT54 rotors
          • Brake Levers
            Shimano MT500 hydraulic disc

          Wheels

          • Rims
            WTB STX i23 TCS, 32h, tubeless ready
          • Front Hub
            Lefty 60
          • Rear Hub
            Shimano MT400 12x148
          • Spokes
            DT Swiss Competition
          • 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
          • Tire Size
            2.25
          • Wheel Size
            29

          Components

          • Handlebar
            Cannondale 2 Flat, butted 2014 Alloy, 31.8mm, 3° rise, 8° sweep, 760mm
          • Stem
            Cannondale 3, 6061 Alloy, 31.8, 7°
          • Grips
            Fabric FunGuy
          • Saddle
            Fabric Scoop Shallow Sport, steel rails
          • Seatpost
            Cannondale C3, 6061 Alloy, 27.2 x 350mm (S), 400mm (M-XL)

          Connectivity

          • Wheel Sensor
            Cannondale Wheel Sensor

          Please note that, based on component availability and other factors, specifications are subject to change without notice.

          Geometry

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          Highlights

          Where It Thrives

          What It's Built For

          Specifications

          Details

          Platform

          Details

              Model Name

              Details

                  Model Code

                  Details

                      Frameset

                      Frame

                      Details

                          Headset

                          Details

                              Rear Shock

                              Details

                                  E-System

                                  Drive Unit

                                  Details

                                      Battery

                                      Details

                                          Charger

                                          Details

                                              Display

                                              Details

                                                  Drivetrain

                                                  Rear Derailleur

                                                  Details

                                                      Front Derailleur

                                                      Details

                                                          Shifters

                                                          Details

                                                              Chain

                                                              Details

                                                                  Crank

                                                                  Details

                                                                      Rear Cogs

                                                                      Details

                                                                          Bottom Bracket

                                                                          Details

                                                                              Pedals

                                                                              Details

                                                                                  Brakes

                                                                                  Brakes

                                                                                  Details

                                                                                      Brake Levers

                                                                                      Details

                                                                                          Wheels

                                                                                          Front Hub

                                                                                          Details

                                                                                              Rear Hub

                                                                                              Details

                                                                                                  Spokes

                                                                                                  Details

                                                                                                      Tires

                                                                                                      Details

                                                                                                          Tire Size

                                                                                                          Details

                                                                                                              Wheel Size

                                                                                                              Details

                                                                                                                  Front Tire

                                                                                                                  Details

                                                                                                                      Rear Tire

                                                                                                                      Details

                                                                                                                          Tire Bead

                                                                                                                          Details

                                                                                                                              Tire Casing

                                                                                                                              Details

                                                                                                                                  Tire Protection

                                                                                                                                  Details

                                                                                                                                      Tire Type

                                                                                                                                      Details

                                                                                                                                          Components

                                                                                                                                          Handlebar

                                                                                                                                          Details

                                                                                                                                              Grips

                                                                                                                                              Details

                                                                                                                                                  Saddle

                                                                                                                                                  Details

                                                                                                                                                      Seatpost

                                                                                                                                                      Details

                                                                                                                                                          Connectivity

                                                                                                                                                          Wheel Sensor

                                                                                                                                                          Details

                                                                                                                                                              Power Meter

                                                                                                                                                              Details

                                                                                                                                                                  Speed Sensor

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                                                                                                                                                                      Extra

                                                                                                                                                                      Extra 1

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                                                                                                                                                                          Visibility

                                                                                                                                                                          Lights

                                                                                                                                                                          Details

                                                                                                                                                                              Paint

                                                                                                                                                                              Details

                                                                                                                                                                                  Tire Sidewalls

                                                                                                                                                                                  Details