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.
Nothing is impassable
The best gravel bike for anything from dirt roads to singletrack trails. With the grip and comfort of the Kingpin suspension, 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 frameset with Kingpin suspension, SmartSense compatible / Integrated Cannondale App connectivity
- Shimano GRX 400 10-speed shifting & hydraulic disc brakes
- WTB ST i23 TCS rims
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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Features
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.
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 4
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Model CodeC15402U
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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ForkTopstone 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
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HeadsetIntegrated, 1-1/8" - 1.5"
Drivetrain
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Rear DerailleurShimano GRX 400, Shadow RD+
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Front DerailleurShimano GRX 400, braze-on
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ShiftersShimano GRX 400, 10-speed
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ChainKMC X10, 10-speed
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CrankShimano GRX 600, 46/30
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Rear CogsSunRace, 11-36, 10-speed
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Bottom BracketShimano BSA 68
Brakes
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BrakesShimano GRX 400 hydraulic disc, 160/160mm RT54 rotors
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Brake LeversShimano GRX 400 hydraulic disc
Wheels
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RimsWTB ST i23 TCS, 700c, 28h, tubeless ready
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SpokesStainless Steel, 14g
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Tire Size45
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Wheel Size700c
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Hubs(F) Formula cartridge bearing, 12x100mm centerlock / (R) Formula cartridge bearing, 12x142mm centerlock
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TiresWTB Riddler Comp, 700x45c (Europe/UK - Vittoria Terreno Dry 700x40c)
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Front TireWTB Riddler Comp, 700x45c (Europe/UK - Vittoria Terreno Dry 700x40c)
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Rear TireWTB Riddler Comp, 700x45c (Europe/UK - Vittoria Terreno Dry 700x40c)
Components
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HandlebarCannondale 3, butted 6061 Alloy, 16 deg flare drop
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StemCannondale 3, 6061 Alloy, 31.8, 7°
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GripsCannondale Bar Tape, 3.5mm
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SaddleFizik Aliante Delta, S-alloy rails
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SeatpostCannondale 3, 6061 Alloy, 27.2x350mm
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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