2025 Cannondale Topstone Carbon 2 GRX - 2x

Frame & fit interfaces

The standards that decide what fits this bike.

Frame material

Carbon

Wheel size

700c"

Suspension

Full

Rear travel

30 mm

Rear axle spacing

142 mm

Seatpost diameter

27.20 mm

Headset standard

IS52/40

Bottom bracket

BSA 68mm threaded

Max tire size

45mm (frame, 2x setup); 56mm (fork)

Stock build

• ForkCannondale 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
• Front BrakeShimano Saint BR-M820
• Rear BrakeShimano Saint BR-M820
• Front Brake RotorShimano GRX 820 hydraulic disc, 160/160mm MT800 rotors
• Rear Brake RotorShimano GRX 820 hydraulic disc, 160/160mm MT800 rotors
• Brake LeversShimano GRX 820 hydraulic disc
• Bottom BracketShimano BSA 68
• CassetteShimano Ultegra R8100, 11-34, 12-speed
• ChainShimano M8100, 12-speed
• CranksetShimano GRX RX820, 48/31
• Front WheelShimano (F) Shimano TC500, 12x100mm centerlock
• Rear WheelShimano (R) Shimano TC500, 12x142mm centerlock
• Front DerailleurShimano GRX 820
• Rear DerailleurShimano GRX 820, Shadow RD+
• ShiftersShimano GRX 820, 12-speed
• HandlebarCannondale 2 ShortDrop, 7050 alloy, 12 deg flare drop
• StemCannondale C1 Conceal, Alloy, 31.8, -6°: 70mm (47-51m), 80mm (54cm), 90mm (56-58cm), 100mm (61cm)
• GripsCannondale KnurlCork, 2.7mm
• HeadsetAcros IS52/40 ICR
• SaddleFizik Terra Argo X7 Aluminium Rail 140mm
• SeatpostCannondale 2 Carbon, 27.2x350mm (47-58), 400mm (61)
• Front TireWTB Riddler TCS Light, 700x45c, tubeless ready
• Rear TireWTB Riddler TCS Light, 700x45c, tubeless ready