Specification

Details

Model

Topstone Carbon 3 GRX - 2x

Vehicle Category

Gravel Road Bike

Application

Gravel riding & racing, bikepacking, going hard and long on dirt or pavement

Starting Price (2025)

$3,299.00 USD

Color Options

Chalk

Specification

Details

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

Rear Shock

Kingpin suspension system

Drivetrain Compatibility

Shimano GRX 610/820, 2x12-speed

Dropouts

12x100mm thru-axle (F), 12x142mm thru-axle (R)

Bottom Bracket

Shimano BSA 68

Crank

Shimano GRX 610, 46/30

Chain

Shimano M7100, 12-speed

Rear Derailleur

Shimano GRX 820, Shadow RD+

Front Derailleur

Shimano GRX 820

Shifters

Shimano GRX 610, 12-speed

Cassette

Shimano HG710, 11-36, 12-speed

Specification

Details

Seating

1 passenger (Selle Royal SRX Open)

Cargo Capacity

Multiple gear/bottle mounts, large StashBag downtube storage bag

Wheels/Tyres

(F) WTB Resolute TCS Light, 700x42c, tubeless ready / (R) WTB Resolute TCS Light, 700x42c, tubeless ready

Wheel Size

700c

Brakes

Shimano GRX 610 hydraulic disc, 160/160mm RT70 rotors

Brake Levers

Shimano GRX 610 hydraulic disc

Handlebar

Cannondale 3, butted 6061 Alloy, 16 deg flare drop

Stem

Cannondale C1 Conceal, Alloy, 31.8, -6°

Headset

Acros IS52/40 ICR

Saddle

Selle Royal SRX Open

Seatpost

Cannondale 3, 6061 Alloy, 27.2x350mm

Seatpost Clamp

Integrated

Grips

Cannondale KnurlCork, 2.7mm

Front Hub

Shimano TC500, 12x100mm centerlock

Rear Hub

Shimano TC500, 12x142mm centerlock

Rims

WTB ST i25 TCS, 28h, tubeless ready

Spokes

Stainless Steel, 14g

Exterior Features

Large StashBag downtube storage bag, tubeless valve stems