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

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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

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.

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.

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.

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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.

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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

Platform

Topstone Carbon
Model Name

Topstone Carbon 1 Lefty
Model Code

C15102U

FRAMESET

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
Fork

Lefty Oliver Carbon, 30mm travel, lockout, Chamber Damper w/ All-Over tune, ISO High-Ride air spring, tapered steerer, 700c, 55mm offset
Headset

Integrated, Carbon, 1-1/8″ – 1-1/2″

DRIVETRAIN

Rear Derailleur

SRAM Force eTap AXS XPLR
Shifters

SRAM Force eTap AXS, 12-speed
Chain

SRAM Force, 12-speed
Crank

SRAM Force Direct Mount, 40T
Rear Cogs

SRAM XG-1271 XPLR, 10-44, 12-speed
Bottom Bracket

SRAM DUB BSA Road 68 Wide

BRAKES

Brakes

SRAM Force eTap AXS hydraulic disc, 160/160mm CenterLine 6-bolt rotors
Brake Levers

SRAM Force eTap AXS

WHEELS

Rims

HollowGram G-S 27 Carbon, 700c, 27mm internal width, 21mm deep, 28h, hookless, tubeless compatible
Spokes

Formula Grand Forza, double butted
Tires

WTB Raddler TCS Light, 700 x 44c, tubeless ready (Europe/UK – Vittoria Mezcal III 700 x 44c ANT tubeless compatible)
Tire Size

44
Wheel Size

700c
Hubs

(F) HollowGram, sealed bearing 12x100mm, 6 bolt / (R) HollowGram 12x142mm w/ DT Swiss 350 internals, 6 bolt
Front Tire

WTB Raddler TCS Light, 700 x 44c, tubeless ready (Europe/UK – Vittoria Mezcal III 700 x 44c ANT tubeless compatible)
Rear Tire

WTB Raddler TCS Light, 700 x 44c, tubeless ready (Europe/UK – Vittoria Mezcal III 700 x 44c ANT tubeless compatible)

COMPONENTS

Handlebar

Cannondale 2 ShortDrop, 7050 alloy, 12 deg flare drop
Stem

Cannondale 1, 7050 Alloy, -7°
Grips

Fizik Solocush Soft, 3mm
Saddle

Fizik Terra Argo X3, kium rails
Seatpost

SAVE Carbon, 27.2, 350mm (XS-L), 400mm (XL)

CONNECTIVITY

Wheel Sensor

Cannondale Wheel Sensor

EXTRA

Extra 1

StrapRack toolholder

PLEASE NOTE THAT, BASED ON COMPONENT AVAILABILITY AND OTHER FACTORS, SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.

Geometry

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Topstone Carbon 1 Lefty