The Cannondale Topstone Carbon 1 Lefty blends a lightweight carbon frame with Kingpin rear compliance and a Lefty Oliver suspension fork to deliver smooth, controlled gravel performance. It’s built for long days in mixed terrain, offering ample tire clearance, integrated storage, and a modern gravel geometry that balances stability with agility.
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Premium carbon frame with Kingpin rear suspension system (up to 30 mm rear compliance)
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Lefty Oliver carbon suspension fork (40 mm travel) with lockout and low-friction bushings
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Integrated StashPort under the down-tube water-bottle mount with included StashBag for essentials
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Internal cable routing and Conceal™ Stem for a tidy cockpit
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Shimano GRX 1×12 drivetrain with 40 T chainring and 11–42 T cassette
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Shimano GRX hydraulic disc brakes with 160 mm rotors front and rear
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HollowGram 22 carbon wheelset, 700 × 44 C WTB Raddler tires, tubeless-ready
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Proportional Response frame construction tuned to each size for optimal stiffness and comfort
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Dropper-post ready seat tube and UDH derailleur hanger for future upgrades
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Clearance for up to 700 × 45 mm tires (frame) and 700 × 47 mm tires (fork)
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Geometry tuned for gravel racing and adventure, with slack head angle and stable wheelbase
Specifications:
Details
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Model Name
Topstone Carbon 1 Lefty
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Frameset
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Frame
Topstone Carbon, Kingpin suspension system, SmartSense compatible, Proportional Response construction, 12x142mm thru-axle, 27.2 dropper post ready, BSA 68mm threaded BB, DirectLine internal cable routing, removable fender bridge, multiple gear/bottle mounts
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Fork
Lefty Oliver Carbon, 30mm travel, lockout, Chamber Damper w/ All-Over tune, ISO High-Ride air spring, tapered steerer, 700c, 55mm offset
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Headset
Integrated, Carbon, 1-1/8" - 1-1/2"
Drivetrain
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Rear Derailleur
SRAM Force eTap AXS XPLR
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Shifters
SRAM Force eTap AXS, 12-speed
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Chain
SRAM Force, 12-speed
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Crank
SRAM Force Direct Mount, 40T
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Rear Cogs
SRAM XG-1271 XPLR, 10-44, 12-speed
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Bottom Bracket
SRAM DUB BSA Road 68 Wide
Brakes
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Brakes
SRAM Force eTap AXS hydraulic disc, 160/160mm CenterLine rotors
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Brake Levers
SRAM Force eTap AXS
Wheels
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Rims
HollowGram G-S 27 Carbon, 700c, 27mm internal width, 21mm deep, 28h, hookless, tubeless compatible
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Spokes
Formula Grand Forza, double butted
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Hubs
(F) HollowGram, Lefty, centerlock / (R) HollowGram 12x142mm w/ DT Swiss 350 internals, centerlock
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Tires
WTB Raddler TCS Light, 700x44c, tubeless ready (Europe/UK - Vittoria Mezcal III 700x44c ANT tubeless compatible)
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Front Tire
WTB Raddler TCS Light, 700x44c, tubeless ready (Europe/UK - Vittoria Mezcal III 700x44c ANT tubeless compatible)
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Rear Tire
WTB Raddler TCS Light, 700x44c, tubeless ready (Europe/UK - Vittoria Mezcal III 700x44c ANT tubeless compatible)
Components
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Handlebar
Cannondale 2 ShortDrop, 7050 alloy, 12 deg flare drop
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Stem
Cannondale 1, 7050 Alloy, -7°
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Grips
Fizik Solocush Soft, 3mm
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Saddle
Fizik Terra Argo X3, kium rails
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Seatpost
SAVE Carbon, 27.2x350mm (XS-L), 400mm (XL)
Extra
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Extra 1
StrapRack tool/stuff holder
