Fullbike Topstone Carbon 4 GRX 400

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

DETAILS

• Platform : Topstone Carbon

• Model Name : Topstone Carbon 4

• Model Code : C15402U

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

Topstone 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

Headset

Integrated, 1-1/8" - 1.5"

DRIVETRAIN

Rear Derailleur : Shimano GRX 400, Shadow RD+

Front Derailleur : Shimano GRX 400, braze-on

Shifters : Shimano GRX 400, 10-speed

Chain : KMC X10, 10-speed

Crank : FSA Gossamer Pro Modular AGX+, 46/30

Rear Cogs : SunRace, 11-36, 10-speed

Bottom Bracket : FSA Mega EXO

BRAKES

Brakes : Shimano GRX 400 hydraulic disc, 160/160mm RT54 rotors

Brake Levers : Shimano GRX 400 hydraulic disc

WHEELS

Rims : WTB ST i23 TCS, 700c, 28h, tubeless ready

Spokes : Stainless Steel, 14g

Tire Size : 45

Wheel Size : 700c

Hubs : (F) Formula cartridge bearing, 12x100mm centerlock / (R) Formula cartridge bearing, 12x142mm centerlock

Tires : WTB Riddler Comp, 700x45c (Europe/UK - Vittoria Terreno Dry 700x40c)

Front Tire : WTB Riddler Comp, 700x45c (Europe/UK - Vittoria Terreno Dry 700x40c)

Rear Tire : WTB Riddler Comp, 700x45c (Europe/UK - Vittoria Terreno Dry 700x40c)

COMPONENTS

Handlebar : Cannondale 3, butted 6061 Alloy, 16 deg flare drop

Stem : Cannondale 3, 6061 Alloy, 31.8, 7°

Grips : Fizik Solocush Soft, 3mm

Saddle     : Fizik Aliante Delta, S-alloy rails

Seatpost : Cannondale 3, 6061 Alloy, 27.2x350mm

CONNECTIVITY

Wheel Sensor : Cannondale Wheel Sensor