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CANNONDALE Topstone Carbon 1 Lefty 2021 Gravel Bike

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Product Description


A capable, versatile gravel road bike. Built for chasing horizons, exploring routes less travelled or accelerating your commute. A balanced riding position: upright enough for comfort over the long haul and control on technical terrain, yet still low and forward enough for speedy efficiency.

Built with plenty of room for tyres up to 42mm wide, for comfort, grip and adventurous capability. With mounts for three waterbottles, plus mounts for top tube storage, Topstone is ready to go long. Multiple bottle cage positions on the downtube mount let you configure for big frame bags.


Choosing 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. It is a guide only and we always recommend visiting one of our stores or contacting one of our experts.

Road Bike Size Guide

Seat Tube Length (mm) 410 458 505 553 600
Standover (mm) 703 744 784 825 863
Reach (mm) 368 377 385 394 402
Road Bike Buying Guide


Bottom Bracket SRAM DUB BB30 ROAD83-A
Chain SRAM X01 Eagle, 12-speed
Crank SRAM Force AXS 1x Crankset, DUB Spindle, 40T
Rear Cogs SRAM PG-1295, X01 Eagle, 10-52, 12-speed
Rear Derailleur SRAM X01 Eagle eTap AXS
Shifters SRAM Force eTap AXS HRD, 12-speed
Fork All-New Lefty Oliver Carbon, 30mm travel, Chamber Damper w/ All-Over tune, ISO High-Ride air spring, tapered steerer, 650b, 55mm offset
Frame BallisTec Carbon Frame, Kingpin suspension system, 12x142 Speed Release thru-axle, dropper post compatible, direct line cable routing
Headset Integrated, 1-1/8 - 1-1/2
Front Hub Lefty 50
Front Tire WTB Venture TCS Light, 650 x 47c, tubeless ready
Rear Hub HollowGram 12x142mm w/ DT Swiss 370 Internals
Rear Tire WTB Venture TCS Light, 650 x 47c, tubeless ready
Rims HollowGram 23, Superlight Hi-Impact Carbon, 28h, 23mm IW, tubeless ready
Tires WTB ByWay TCS Light, 650 x 47c, tubeless ready
Brakes SRAM Force eTap AXS, 160/160mm 6-bolt rotors
Grips Cannondale Bar Tape, 3.5mm
Handlebar HollowGram SAVE SystemBar, Carbon, 8 deg. pitch adjust
Saddle Fabric Scoop Shallow Race, titanium rails
Seatpost HollowGram SAVE Carbon, 27.2 x 350mm
Stem HollowGram SAVE, Alloy,

  • BallisTec carbon Frame for stiff but light construction allows you to convert more of your power into speed

  • Lefty Oliver 30mm gravel suspension fork is engineered to flex to absorb shock and vibration meaning better control and even more comfort

  • SRAM X01 Eagle 12-speed Drivetrain for precise gear changes and making it easier to ride up steep hills

  • SRAM Force eTap AXS Hydraulic disc brakes give powerful, controllable and consistent stopping power with less effort

  • WTB ByWay TCS Light, 650 x 47c Tyres offer great traction off road and excellent rolling ability on the tarmac

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