Topstone 4

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          Explore further. Ride freer.

          A capable, versatile gravel road bike. Built for chasing horizons, exploring routes less travelled or accelerating your commute.

          Where it thrives

          Gravel roads, out in the elements

          What it's built for

          Traction, handling, comfort

          Highlights

          • Light, durable SmartForm C2 Alloy Frame w/ full carbon fork
          • microSHIFT Advent X 10-speed shifting / Promax mechanical disc brakes
          • WTB Riddler Comp tires, 700 x 37c
          Feel the light
          Light and lively, smooth yet snappy. Topstone's SmartForm C2 Alloy construction showcases our decades of expertise in aluminum craftsmanship.
          Full Carbon Fork

          A full carbon fork with a tapered steerer and 12mm thru-axles delivers a light, comfortable and precise-steering front end.

          OutFront Steering Geometry

          Keeps the steering light and agile, while positioning the wheel further in front of the rider for stability and confidence on rougher stuff. Plus it reduces the chance of toe overlap on smaller sizes.

          Dropper Ready

          Built to accept an internally-routed 27.2 dropper seatpost, which shouldn’t really be a surprise on a bike that's this off-road capable.

          Removable Fender Bridge

          Bolts on when you want fenders, disappears when you don't.

          Specs

          Details

          Frameset

          • Frame
            SmartForm C2 Alloy, 12x142 thru-axle, tapered headtube, flat mount disc, StraightShot internal cable routing, multiple gear/bottle mounts
          • Fork
            BallisTec Full Carbon, 1-1/8" to 1-1/4" steerer, 55mm OutFront offset, flat mount disc, internal routing, 12x100 thru axle
          • Headset
            Integrated, 1-1/8" - 1-1/4"

          Drivetrain

          • Rear Derailleur
            microSHIFT Advent X
          • Shifters
            microSHIFT Advent X, 10-speed
          • Chain
            KMC X10, 10-speed
          • Crank
            Prowheel, 40T
          • Rear Cogs
            microSHIFT, 11-48, 10-speed
          • Bottom Bracket
            Cartridge, square taper

          Brakes

          • Brakes
            Promax Render R mechanical disc, 160/160mm rotors
          • Brake Levers
            microSHIFT Advent X

          Wheels

          • Front Hub
            Formula alloy, 12x100mm
          • Rear Hub
            Formula alloy, 12x142mm
          • Brake Type
            Disc
          • Rims
            RD 2.0, 28h
          • Spokes
            Stainless Steel, 14g
          • Tire Size
            37
          • Wheel Size
            700c
          • Tires
            WTB Riddler Comp, 700x37c

          Components

          • Handlebar
            Cannondale 3, butted 6061 alloy, 16 deg flare drop
          • Stem
            Cannondale 3, 6061 Alloy, 31.8, 7°
          • Grips
            Cannondale Bar Tape, 3.5mm
          • Saddle
            Cannondale Stage CX
          • Seatpost
            Cannondale 4, 6061 Alloy, 27.2x350mm

          Extra

          • Extra 1
            Removable fender bridge

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

          Geometry

          Road Resist Wind

          See Helmets

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