Explore further. Ride freer.

An amazingly capable, versatile gravel road bike. Built for chasing horizons, exploring routes less travelled or accelerating your commute.

Where it thrives

Gravel roads, out in the elements

What it’s built for

Traction, handling, comfort

Highlights

Lightweight SmartForm C2 Alloy frame w/ full carbon fork
microSHIFT Advent X, wide range 10-speed group
Powerful disc brakes

Amazingly capable

Straightforward, reliable and a whole hell of a lotta fun, the Topstone Alloy is a gravel bike crafted for those with a taste for adventure – and value. Roll light and free, or load it up for a long haul, Topstone’s comfortable ride, confident handling and up-for-anything capability make it the perfect partner on any road, anywhere.

Wide Ranging Capabilities

Clearance for big 45mm tires lets you push further into the rough stuff, and enjoy more grip and comfort on every ride.

Easy to Live With. Easy to Love. Everything on the Topstone is designed for simplicity, ease of use and compatibility. Whether you’re setting out on a big ride or taking the long way to work – less down time, more ride time.

Full Carbon Fork

OutFront Steering Geometry

Dropper Ready

Load Up. Roll Out.

Specs

DETAILS

Platform

Topstone Alloy
Model Name

Topstone 4
Model Code

C15902U

FRAMESET

Frame

Lightweight SmartForm C2 Alloy, 12×142 thru-axle, tapered headtube, BSA threaded BBm flat mount disc, StraightShot internal cable routing, multiple gear/bottle mounts
Fork

Topstone Carbon, 1-1/8″ to 1.5″ steerer, 55mm OutFront offset, flat mount disc, internal routing, 12×100 thru-axle, fender/gear mounts
Headset

Integrated, 1-1/8″ – 1-1/2″

DRIVETRAIN

Rear Derailleur

microSHIFT Advent X
Shifters

microSHIFT Advent X, 10-speed
Chain

KMC X10, 10-speed
Crank

Prowheel, Charm 40T
Rear Cogs

microSHIFT, 11-48, 10-speed
Bottom Bracket

Cartridge, square taper

BRAKES

Brakes

Promax Render R mechanical disc, 160/160mm rotors
Brake Levers

microSHIFT Advent X

WHEELS

Rims

GXD 1.0, 28h
Spokes

Stainless Steel, 14g
Tires

WTB Riddler Comp, 700 x 37c (Europe/UK – Vittoria Terreno Dry, 700 x 37c)
Tire Size

37
Wheel Size

700c
Hubs

(F) Formula alloy, 12x100mm / (R) Formula alloy, 12x142mm
Front Tire

WTB Riddler Comp, 700 x 37c (Europe/UK – Vittoria Terreno Dry, 700 x 37c)
Rear Tire

WTB Riddler Comp, 700 x 37c (Europe/UK – Vittoria Terreno Dry, 700 x 37c)

COMPONENTS

Handlebar

Cannondale 3, butted 6061 Alloy, 16 deg flare drop
Stem

Cannondale 3, 6061 Alloy, 31.8, 7°
Grips

Cannondale Bar Tape, 3.5mm
Saddle

Cannondale Stage CX
Seatpost

Cannondale 4, 6061 Alloy, 27.2 x 350mm

EXTRA

Extra 1

Removable fender bridge

WEIGHT: XS, SM, MD, LG, XL – BIKE AND FRAME WEIGHTS MAY VARY IN FINAL PRODUCTION.
PLEASE NOTE THAT, BASED ON COMPONENT AVAILABILITY AND OTHER FACTORS, SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.

Geometry

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Topstone 4