About the Topstone 4 Gravel BikeAn amazingly 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 elementsWhat it's built for - Traction, handling, comfortKey FeaturesLightweight SmartForm C2 Alloy frame w/ full carbon forkmicroSHIFT Advent X, wide range 10-speed groupPowerful disc brakesSpecificationsFramesetFrame: Lightweight SmartForm C2 Alloy, 12x142 thru-axle, tapered headtube, BSA threaded BBm flat mount disc, StraightShot internal cable routing, multiple gear/bottle mountsFork: Topstone Carbon, 1-1/8 to 1.5 steerer, 55mm OutFront offset, flat mount disc, internal routing, 12x100 thru-axle, fender/gear mountsWheels Wheelset: GXD 1.0, 28hTyres: Vittoria Terreno Dry, 700x37cDrivetrainPedals: Not IncludedRear Derailleur: microSHIFT Advent XShifters: microSHIFT Advent X, 10-speedChain: KMC X10, 10-speedCrankset: Prowheel, Charm 40TRear Cogs: microSHIFT, 11-48, 10-speedBottom Bracket: Cartridge, square taperComponentsHandlebar: Cannondale 3, butted 6061 Alloy, 16 deg flare dropStem: Cannondale 3, 6061 Alloy, 31.8, 7°Brakes: Promax Render R mechanical disc, 160/160mm rotorsBrake Levers: microSHIFT Advent XSaddle: Cannondale Stage CXSeatpost: Cannondale 4, 6061 Alloy, 27.2x350mmBike SizingChoosing the bike size depends on the type of bike, your height, your riding style, and your preference. A correct fitting bike will be more comfortable, more efficient and more fun to ride. This bike size guide gives our customers general advice on choosing the right size. XSSMLXLRider Height147cm - 165cm160cm - 175cm170cm - 185cm177cm - 193cm 182cm - 203cm