Grade Carbon Pro

The original is back! Generation three of our gravel-pioneering Grade has been redesigned with more capability than ever before. With evolved geometry, increased tire clearance, and 30mm of ‘gravel travel’ thanks to Triple Triangle™, Grade offers more control for riders focused on the fun of expedition, not the stress of competition. Fully equipped with Shimano GRX drivetrain and brakes.

Shimano GRX Drivetrain
Shimano GRX Brakes
WTB Vulpine TCS Light 700*40c Tires

Gravel Travel

The Grade frame’s Triple Triangle design with floating stays offer as much as 30mm of “Gravel Travel” without rubber bumpers, pivots or mechanical features. This was achieved in part by our Dual Fiber Dynamics (DFD) located in the floating stays - a combination of low modulus, solid core, long strand glass fibers molded to an optimum shape and then wrapped in carbon for added strength and smooth transitions.

Integrated Frame Protection

Grade is just as comfortable on rough single track than it is on smooth tarmac. So, we’ve added robust frame protection on the downtube for the inevitable rock strikes and on the chainstay to safeguard against chain slap.

Suspension fork compatible

If the rough and chunky are your preference and you need more than Grade’s 30mm of Gravel Travel offers, add a suspension fork for even more rowdiness!

Bike Radar Said:

"Verdict: GT's update of the legendary Grade maintains it's A+ standard."

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Frame

frameGrade Carbon Frame, Triple Triangle Design feat. Floating Seatstays, 12x142mm Thru Axle, 45mm Max Tire Width

sizes availableSM, MD, LG, XL

forkGrade Carbon Fork, 1.5 Tapered Carbon Steerer, 12x100 Thru Axle

Wheels

rimsWTB ST Light i23 TCS 2.0, 28h, Tubeless Ready

front hubFormula CL-712, 12x100mm Centerlock

rear hubFormula, 12x142mm Centerlock

front tireWTB Vulpine TCS Light, 700x40c, Dual DNA Compound, TCS Aramid Bead

rear tireWTB Vulpine TCS Light, 700x40c, Dual DNA Compound, TCS Aramid Bead

Drivetrain

rear derailleurShimano GRX RX810, Shadow Plus

front derailleurShimano GRX RX-820

rear cogsShimano HG7001, 11-34T

chainKMC X11, 11-speed

crankShimano GRX RX6001, 46/30T

bottom bracketShimano RS500 BSA

Cockpit

handlebarGT DropTune Super Light, Double Butted 6061 Alloy, Flat Top, 16° Flare (Width: S - 42cm, M & L -44cm, XL - 46cm)

stemGT 3D Forged SL Alloy, 31.8

gripsGT Gravel Grip Premium Tape

headsetFSA No.42 ACB

seatpostGT Carbon, 27.2mm 350mm (S/M/L-350mm), XL-400mm)

saddleWTB Silverado SL Fusion

Brakes

brakesShimano GRX 400, 160/160mm RT30 Rotors

Please note that, based on component availability and other factors, specifications are subject to change without notice.

Fit Guide

XS: 5'0 - 5'5"
SM: 5'3" - 5'8"
MD: 5'7" - 5'11"
LG: 5'11" - 6'2"
XL: 6'2" - 6'5"

Geometry

Sizes (mm)	SM	MD	LG	XL
Seat tube length	450	500	550	600
Seat tube angle effective	73 °	73 °	73 °	73 °
Seat tube angle actual	73 °	73 °	73 °	73 °
Top tube horizontal	553	581	609	638
Top tube actual	530	560	591	623
Head tube angle	70 °	70 °	70 °	70 °
Standover	730	753	792	816
Head tube length	106	134	162	191
Stem length	80	80	80	80
Wheelbase	1040	1069	1099	1129
Front center	621	650	680	710
Chainstay length	430	430	430	430
Crank length	170	172.5	172.5	175
Bottom bracket drop	75	75	75	75
Bottom bracket height	284	284	284	284
Fork rake	55	55	55	55
Trail	72	72	72	72
Stack	550	577	603	630
Reach	385	405	425	445

Notes

Maximum Axle To Crown(A2C): 436.7mm

Are the wheels tubeless compatible?

Yes, the wheels are compatible with tubeless, but you will need sealant, valve stems, and tubeless tires to set it up tubeless.

What headset is used on the Grade Carbon?

The Grade Carbon has a Semi-Integrated, 1-1/8” - 1-1/2” heads tube. It utilizes a IS42/52 internal headset.

What is the max rotor size for the rear brake on the Grade Carbon?

The max rotor size on the rear brake is a 180mm rotor. The native brake rotor size without an adapter is 160mm rotor.

What front derailleur or chain guide is compatible with the Grade Carbon?

The Grade Carbon is compatible with any braze on front derailleur or chain guide.

What is the maximum chainring size for the Grade Carbon?

The maximum chainring size on the Grade Carbon is 48/32T for 2x drivetrains and a 42T chainring for 1x drivetrains.

What is the chainline on the Grade Carbon?

The Grade Carbon has wide chainline and the minimum chainline is 47mm.

What derailleur hanger is used on the Grade Carbon?

The derailleur hanger is a TA ST SS 076. (Part #K33040)

What is the max tire width on the Grade Carbon?

The max tire width is a 45mm wide tire (measured).

What bottom bracket is used on the Grade Carbon?

The Grade Carbon uses a BSA/68m bottom bracket.

What is the max rider weight on the Grade Carbon?

The max rider weight is 305lbs/138kg.

Is touchup paint available?

Unfortunately, touchup paint is not available at this time as our paint codes are unique to our painter.

GT Tech Book

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GT Owner's Manual

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Inside The Ride: The Grade Story

Take a ride through the development of the GT Grade, one of the longest standing gravel-specific platforms in the industry. In this episode of Inside the Ride, our staff and team riders share what goes into making this bike a standout.

All Gravel

Since its introduction in 2014, Grade has pushed the boundaries of adventure riding. The first ever purpose-built carbon gravel bike, made major waves when it was launched, winning multiple industry awards. In 2019, we pushed it even further, redesigning the frame with our floating Triple Triangle™ seatstays, and once again, the accolades poured in, being named Gravel Bike of the Year from BikeRadar and Bike Rumor. Pretty sweet laurels, right? Well we’re not resting on em! The 3rd generation gravel-pioneering Grade once again claimed BikeRadars Gravel Bike of the Year and is more capable than ever, with a new frame, featuring 30mm of “Gravel Travel”, evolved geometry, increased tire clearance, internal cable routing, and plenty of frame protection for when the road ends and the fun begins.

Gravel