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Pairing Cannondale's light kingpin rear suspension with a gravel-specific carbon fork, this latest generation of the topstone gives a smoother ride with more confidence and control than ever.
Pairing Cannondale's light kingpin rear suspension with a gravel-specific carbon fork, this latest generation of the topstone gives a smoother ride with more confidence and control than ever.
Cannondale

Cannondale - Topstone Carbon 2 GRX 2x Obsidian - 51cm

£3,500.00
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Cannondale - Topstone Carbon 2 GRX 2x Obsidian - 51cm

Season:2025

Brand:Cannondale

Code:CANC15155U2051

Pairing Cannondale's light kingpin rear suspension with a gravel-specific carbon fork, this latest generation of the topstone gives a smoother ride with more confidence and control than ever.

Thrives in gravel racing, exploring rough tracks and adventuring over new terrain.

Built for making every ride feel smoother over mixed surfaces and carrying supplies for long days.
Technical Information
  • Platform
    Topstone Carbon
  • Model Name
    Topstone Carbon 2 GRX - 2x
  • Model Code
    C15155U
  • Frame
    Topstone Carbon, Kingpin suspension system, Proportional Response construction, downtube Stashport, internal cable routing, 12x142mm thru-axle, 27.2 dropper post ready, UDH, BSA 68mm threaded BB, flat mount disc, removable fender bridge, multiple gear/bottle mounts
  • Fork
    Topstone Carbon, 1-1/8" to 1.5" steerer, 55mm OutFront offset, flat mount disc, internal routing, 12x100 thru-axle, triple bottle/gear mounts, fender mounts
  • Headset
    Acros IS52/40 ICR
  • Rear Derailleur
    Shimano GRX 820, Shadow RD+
  • Front Derailleur
    Shimano GRX 820
  • Shifters
    Shimano GRX 820, 12-speed
  • Chain
    Shimano M8100, 12-speed
  • Crank
    Shimano GRX 820, 48/31
  • Rear Cogs
    Shimano Ultegra R8100, 11-34, 12-speed
  • Bottom Bracket
    Shimano BSA 68
  • Brakes
    Shimano GRX 820 hydraulic disc, 160/160mm MT800 rotors
  • Brake Levers
    Shimano GRX 820 hydraulic disc
  • Front Hub
    Shimano TC500, 12x100mm centerlock
  • Rear Hub
    Shimano TC500, 12x142mm centerlock
  • Rims
    WTB KOM Team i25 TCS, 28h, tubeless ready
  • Spokes
    Stainless Steel, 14g
  • Tire Size
    37
  • Wheel Size
    700c
  • Tires
    WTB Riddler TCS Light, 700x45c, tubeless ready
  • Front Tire
    WTB Riddler TCS Light, 700x45c, tubeless ready
  • Rear Tire
    WTB Riddler TCS Light, 700x45c, tubeless ready
  • Handlebar
    Cannondale 2 ShortDrop, 7050 alloy, 12 deg flare drop
  • Stem
    Cannondale C1 Conceal, Alloy, 31.8, -6°
  • Grips
    Cannondale KnurlCork, 2.7mm
  • Saddle
    Fizik Terra Argo X7
  • Seatpost
    Cannondale 2 Carbon, 27.2x350mm (47-58), 400mm (61)
  • Wheel Sensor
    Cannondale Wheel Sensor
  • Extra
    Large StashBag downtube storage bag, tubeless valve stems
Sizing Information
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