Specifications
Model Description
Two rings, endless possibilities. This Topstone is built to tackle the toughest gravel rides with Shimano GRX 400 2×10-speed shifting and a SmartForm C2 Alloy frame. With ample tire clearance and mounts for racks and gear, it’s engineered to meet the demands of adventurous riders and unpredictable routes.
What it’s for
Gravel-riding, exploring, bikepacking, performance commuting
Highlights
- Lightweight SmartForm C2 Alloy frame w/ full carbon fork
- Reliably precise shifting from the Shimano GRX 400, wide-range, 2×10-speed gravel drivetrain
- Powerful, controllable braking from Shimano’s GRX400 hydraulic disc brakes
- Selle Royal SRX Open saddle balances supportive padding and a pressure-relieving central channel for performance comfort
Details
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Model Name
Topstone 2 GRX – 2x
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Frameset
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Frame
Topstone, lightweight SmartForm C2 Alloy, 12×142 thru-axle, tapered headtube, BSA threaded BBm flat mount disc, StraightShot internal cable routing, multiple gear/bottle mounts
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Fork
Topstone Carbon, 1-1/8″ to 1.5″ steerer, 55mm OutFront offset, flat mount disc, internal routing, 12×100 thru-axle, fender/gear mounts
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Headset
Integrated, 1-1/8″ – 1.5″
Drivetrain
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Rear Derailleur
Shimano GRX 400, Shadow RD+
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Front Derailleur
Shimano GRX 400
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Shifters
Shimano GRX 400, 10-speed
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Chain
Shimano HG54, 10-speed
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Crank
Shimano GRX 400 46/30
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Rear Cogs
Shimano HG500, 11-32, 10-speed
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Bottom Bracket
Shimano BSA 68
Brakes
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Brakes
Shimano GRX 400 hydraulic disc, 160/160mm RT30 centerlock rotors
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Brake Levers
Shimano GRX 400 hydraulic disc
Wheels
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Front Hub
Shimano TC500, 12x100mm centerlock
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Rear Hub
Shimano TC500, 12x142mm centerlock
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Rims
GXD 1.0, 28h, 23mm internal width, tubeless ready
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Spokes
Stainless Steel, 14g
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Tires
WTB Riddler TCS Light, 700x37c, tubeless ready
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Front Tire
WTB Riddler TCS Light, 700x37c, tubeless ready
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Rear Tire
WTB Riddler TCS Light, 700x37c, tubeless ready
Components
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Handlebar
Cannondale 3, butted 6061 Alloy, 16 deg flare drop: 400mm (XS), 420mm (SM-MD), 440mm (LG-XL)
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Stem
Cannondale 3, 6061 Alloy, 31.8, 7°: 80mm (XS), 90mm (SM-MD), 100mm (LG-XL)
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Grips
Cannondale Knurl Cork, 2.7mm
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Saddle
Selle Royal SRX Open
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Seatpost
Cannondale 3, 6061 Alloy, 27.2x350mm
Extra
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