Lefty Oliver Carbon
The ultimate gravel suspension fork. Unique single-sided design and needle-bearing internals deliver unmatched steering precision and smoothness for unreal control and comfort. Just 1,340 grams.
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Nothing is impassable
The best dual-suspension gravel bike for rugged dirt roads and singletrack trails. With the Kingpin system and Lefty fork, nothing is off-limits.
Where it thrives
Gravel and Dirt Roads, Rough Pavement, Trails
What it's built for
Gravel riding, back road exploring, bike packing and off-road adventures
Highlights
- Lightweight Topstone Carbon frame with Kingpin suspension / Lefty Oliver Carbon gravel suspension fork, 30mm travel
- SRAM Force eTap electronic 12-speed group / SAVE Carbon seatpost
- HollowGram G-S 27 Carbon wheels
Nothing is Impassable
Kingpin Suspension
Delivering a smooth ride without the added weight and complexity of a shock and links, Kingpin is our answer for the most demanding gravel riders. Whether you need more comfort to go long, more traction to push beyond or more give to take on the tech - Kingpin is the maintenance-free, lightweight answer to your prayers.
Get to Know Kingpin Suspension
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Lefty Goes Big
The smoothest, most-precise handling gravel fork in the world. With 30mm of bob-free travel and room for 700x45mm tires, Lefty Oliver lives to push the boundaries with comfort and control.
Features
Engineered Simplicity
Low-friction bushings on the Kingpin thru-axle offer smooth action, maintenance-free reliability and over 100 grams of weight savings vs conventional cartridge bearings.
Clearance and Compatibility
The new dropped chainstay design lets you run big volume tires (up to 700x45mm or 27.5x2.1", with 6mm of mud-shedding clearance on each side), all with a standard dish rear wheel for easy interchangeability.
Tuned for the Rider
Our Proportional Response size-specific construction creates optimal frame stiffness and compliance for each frame size, so that every rider has the ideal ride feel and comfort of Kingpin.
SmartSense Ready
Make every ride better with enhanced visibility and awareness. The SmartSense-ready frame means it's easy to upgrade to our system of intelligent running lights and rear-facing radar.
Hollowgram G-S 27 Carbon Wheels
Light, smooth and guaranteed for life, these carbon hoops were made for gravel! The 27mm internal width is perfect for bigger tires and the 21mm deep profile takes the sting out of the rough and rugged. Just 1450 grams/pair.
OutFront Steering Geometry
Confident stability meets nimble agility. An extra long fork offset paired with a slack head angle keeps the steering light and lively, yet delivers unreal confidence at speed and in the rough stuff.
Connected
An integrated wheel sensor delivers hyper-accurate speed, route and distance info while you ride, registers your bike, reminds you of needed service and more, all through the free Cannondale App.
Dropper Ready
Built to accept an internally-routed 27.2mm dropper seatpost, which shouldn't really be a surprise on a bike this off-road capable.
Load Up. Roll Out.
With plentiful gear and waterbottle mounts on the frame and fork, Topstone Carbon is ready to load up and go long.
Corner like a Boss
Rail through the rough and come out smiling. Led by our OutFront steering geometry, the Topstone Carbon offers up handling that's serenely stable in the chop, and light & nimble everywhere else.
Topstone Carbon Explained
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Specs
Details
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Platform
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Model NameTopstone Carbon 1 Lefty
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Model CodeC15102U
Frameset
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FrameTopstone 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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ForkLefty 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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HeadsetIntegrated, Carbon, 1-1/8" - 1-1/2"
Drivetrain
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Rear DerailleurSRAM Force eTap AXS XPLR
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ShiftersSRAM Force eTap AXS, 12-speed
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ChainSRAM Force, 12-speed
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CrankSRAM Force Direct Mount, 40T
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Rear CogsSRAM XG-1271 XPLR, 10-44, 12-speed
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Bottom BracketSRAM DUB BSA Road 68 Wide
Brakes
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BrakesSRAM Force eTap AXS hydraulic disc, 160/160mm CenterLine rotors
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Brake LeversSRAM Force eTap AXS
Wheels
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RimsHollowGram G-S 27 Carbon, 700c, 27mm internal width, 21mm deep, 28h, hookless, tubeless compatible
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SpokesFormula Grand Forza, double butted
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Tire Size44
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Wheel Size700c
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Hubs(F) HollowGram, Lefty, centerlock / (R) HollowGram 12x142mm w/ DT Swiss 350 internals, centerlock
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TiresWTB Raddler TCS Light, 700x44c, tubeless ready (Europe/UK - Vittoria Mezcal III 700x44c ANT tubeless compatible)
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Front TireWTB Raddler TCS Light, 700x44c, tubeless ready (Europe/UK - Vittoria Mezcal III 700x44c ANT tubeless compatible)
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Rear TireWTB Raddler TCS Light, 700x44c, tubeless ready (Europe/UK - Vittoria Mezcal III 700x44c ANT tubeless compatible)
Components
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HandlebarCannondale 2 ShortDrop, 7050 alloy, 12 deg flare drop
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StemCannondale 1, 7050 Alloy, -7°
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GripsFizik Solocush Soft, 3mm
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SaddleFizik Terra Argo X3, kium rails
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SeatpostSAVE Carbon, 27.2x350mm (XS-L), 400mm (XL)
Connectivity
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Wheel SensorCannondale Wheel Sensor
Extra
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Extra 1StrapRack tool/stuff holder
Please note that, based on component availability and other factors, specifications are subject to change without notice.
Geometry
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