Name: Cannondale Topstone Carbon 3 GRX 1x 2025 - Gravel Bike
Brand: Cannondale

The Cannondale Topstone Carbon 3 GRX 1x is designed for riders who want to push beyond the limits of smooth roads. Its carbon frame is built with Kingpin suspension, a lightweight and efficient system that provides up to 30mm of rear compliance without the weight and complexity of traditional shocks. This smooths out bumps and vibrations, keeping you comfortable and in control over rough terrain.

Cannondale Topstone Carbon Review

Key Features:

Frame: Carbon with Kingpin suspension, StashPort storage, clearance for 45c tyres.
Fork: Carbon with 55mm OutFront offset, internal routing, and multiple mounts.
Drivetrain: Shimano GRX 610 & 822, 1x12-speed, wide-range gearing.
Brakes: Shimano GRX 610 hydraulic discs, 160mm RT70 rotors.
Wheels: WTB ST i25 TCS rims with Shimano TC500 hubs, tubeless ready.
Tyres: WTB Riddler 700x45c, tubeless-ready, versatile tread.
Standout Feature: Kingpin rear suspension for enhanced comfort and traction.
Finance: Available with 0% APR finance.

Thanks to Proportional Response construction, the frame’s stiffness and compliance are fine-tuned for each size, ensuring an optimised ride feel for every rider. The StashPort downtube storage lets you carry essential tools or gear with ease, making it ideal for long rides and bikepacking adventures.

The full carbon fork features multiple mounts for bottles, gear, and fenders, making it highly adaptable for adventure riding. A 55mm OutFront offset improves stability at speed while maintaining agile handling.

Equipped with Shimano’s GRX 610 & 822 1x12-speed drivetrain, the Topstone Carbon 3 delivers smooth, reliable shifting and a wide 10-51T cassette, providing the gearing needed for steep climbs and fast descents. Paired with GRX 610 hydraulic disc brakes and 160mm RT70 rotors, you get powerful, consistent stopping power in all conditions.

The bike rolls on WTB ST i25 TCS tubeless-ready wheels, designed for durability and responsiveness, while WTB Riddler 700x45c tyres offer a balance of grip and rolling efficiency, excelling on mixed surfaces.

A Cannondale 3 alloy seatpost and Selle Royal SRX Open saddle provide comfort for long days in the saddle, while the Cannondale 3 alloy handlebars feature a 16-degree flare drop for better control on rough terrain.

Occasionally, without notice, manufacturers change product design and/or specifications.

See the table below to find the right size.

Gravel Bike Bike Sizing

XXS (44)

4'8"

5'1"

XS (48)

5'1"

5'4"

S (51)

5'4"

5'7"

M (54)

5'7"

5'10"

L (56)

5'10"

6'0"

XL (58)

6'0"

6'3"

XXL (60)

6'3"

6'5"

XXXL (62)

6'5"

6'9"

Read our bike size guide for more information on sizing.

Height	Size
4’8” / 143cm	44 (XXS)
4’9” / 145cm	44 (XXS)
4’10” / 148cm	44 (XXS)
4’11” / 150cm	44 (XXS)
5’0” / 152cm	44 (XXS)
5’1” / 155cm	44 (XXS)	48 (XS)
5’2” / 158cm		48 (XS)
5’3” / 160cm		48 (XS)
5’4” / 163cm		48 (XS)	51 (S)
5’5” / 165cm			51 (S)
5’6” / 168cm			51 (S)
5’7” / 170cm			51 (S)	54 (M)
5’8” / 173cm				54 (M)
5’9” / 175cm				54 (M)
5’10” / 178cm				54 (M)	56 (L)
5’11” / 180cm					56 (L)
6’0” / 183cm					56 (L)	58 (XL)
6’1” / 185cm						58 (XL)
6’2” / 188cm						58 (XL)
6’3” / 191cm						58 (XL)	60 (XXL)
6’4” / 193cm							60 (XXL)
6’5” / 196cm							60 (XXL)	62 (XXXL)
6’6” / 198cm								62 (XXXL)
6’7” / 201cm								62 (XXXL)
6’8” / 203cm								62 (XXXL)
6’9” / 205cm								62 (XXXL)

Read our bike size guide for more information on sizing.

Frame	Topstone Carbon, Kingpin suspension system, Proportional Response construction, downtube Stashport, internal cable routing, 12x142mm thru-axle, 27.2 dropper post ready, UDH, BSA 68mm threaded BB, flat mount disc, 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	Acros IS52/40 ICR
Stem	Cannondale C1 Conceal, Alloy, 31.8, -6°
Bars	Cannondale 3, butted 6061 Alloy, 16 deg flare drop
Front Brake	Shimano GRX 610 hydraulic disc, 160/160mm RT70 rotors
Rear Brake	Shimano GRX 610 hydraulic disc, 160/160mm RT70 rotors
Brake Lever	Shimano GRX 610 hydraulic disc
Front Mech	Null
Rear Mech	Shimano GRX 822, Shadow SGS
Shifters	Shimano GRX 610, 12-speed
Speed	12
Rims	WTB ST i25 TCS, 28h, tubeless ready
Front Hub	(F) Shimano TC500, 12x100mm centerlock / (R) Shimano TC500, 12x142mm centerlock
Rear Hub	(F) Shimano TC500, 12x100mm centerlock / (R) Shimano TC500, 12x142mm centerlock
Spokes	Stainless Steel, 14g
Front Tyre	WTB Riddler TCS Light, 700x45c, tubeless ready
Rear Tyre	WTB Riddler TCS Light, 700x45c, tubeless ready
Seat Post	Cannondale 3, 6061 Alloy, 27.2x350mm
Saddle	Selle Royal SRX Open
Chainset	Shimano GRX 610, 40T
Bottom Bracket	Shimano BSA 68
Chain	Shimano M7100, 12-speed
Cassette	Shimano SLX M7100, 10-51, 12-speed

Won't Be Beaten

Cannondale Topstone Carbon 3 GRX 1x 2025 - Gravel Bike

Carbon Frame

Stash Port

Kingpin Suspension

Gravel Bike Bike Sizing

Cannondale Topstone Carbon 3 GRX 1x 2025 - Gravel Bike