GT Grade Carbon X

Name: GT Grade Carbon X
Brand: GT

2025 RoadGravel Manufacturer page

Last known price: $3,500

Prices shown first for United States
Travel: 40 / 45 mm Fork / rear shock
Wheels: 700c
Drivetrain: 1 × 11 40t / 11–42t
Gear range: 382%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 160–172.7
MD 170.2–182
LG 179–189
XL 187–195.6

Components

18 of 19 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Grade Carbon Frame, Triple Triangle Design feat. Floating Seatstays, 12x142mm Thru Axle, 45mm Max Tire Width Not identified

Suspension

1 part

Fork
- RockShox Rudy XPLR

Drivetrain

6 parts

Brakes

1 part

Brakes
- SRAM Apex Disc

Wheels and tires

4 parts

Cockpit and contact points

6 parts

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 405mm

Stack 577mm

Wheelbase 1069mm

Head angle 70.0°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	385	405	425	445
Stackmm	550	577	603	630
Top tube lengthmm	553	581	609	638
Seat tube lengthmm	450	500	550	600
Head tube lengthmm	106	134	162	191
Head tube angle	70°	70°	70°	70°
Seat tube angle	73°	73°	73°	73°
Chainstay lengthmm	430	430	430	430
Wheelbasemm	1040	1069	1099	1129
Front centermm	621	650	680	710
Bottom bracket dropmm	75	75	75	75
Bottom bracket heightmm	284	284	284	284
Standover heightmm	730	753	792	816
Fork rakemm	55	55	55	55
Trailmm	72	72	72	72
Stack/reach ratio	1.43	1.43	1.42	1.42
Suspension and parts
Crank lengthmm	170	172.5	172.5	175
Stem lengthmm	80	80	80	80

Not published by the manufacturer: Front travel, Rear travel, Handlebar width, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon

Suspension

Suspension configuration: Full suspension
Front travel: 40 mm
Rear travel: 45 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 40
Largest chainring: 40
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 42
Lowest gear: 27.6 in
Highest gear: 105.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 42c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

27.6 gear inches

This value is above the central range for this class.

Cohort: Road / Gravel Model year: 2025
Sample: 1,536 bicycles with this information
Coverage: 76.6% of the class

Highest gear

105.5 gear inches

This value is below the central range for this class.

Cohort: Road / Gravel Model year: 2025
Sample: 1,536 bicycles with this information
Coverage: 76.6% of the class

Shifting

Mechanical

688 of 1,999 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2025
Sample: 1,999 bicycles with this information
Coverage: 99.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.6 km/h
Highest gear: 40.4 km/h

Total gear range 382%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 27.6–105.5 gear inches
Class reference (p10–p90): 22.8–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2025
Lowest gear: 1536 bicycles with this information, 76.6% of the class
Highest gear: 1536 bicycles with this information, 76.6% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds
Specification	This bicycle GT Grade Carbon X	GT Grade Carbon Elite	GT Grade Carbon Pro	GT Grade Carbon Pro LE	GT Grade Comp	GT Grade Sport
Frame
Frame material	Carbon	Carbon	Carbon	Carbon	Aluminum	Aluminum
Fork material	Not informed	Carbon	Carbon	Carbon	Carbon	Carbon
Suspension
Suspension configuration	Full suspension	Rigid	Rigid	Rigid	Rigid	Rigid
Front travel	40 mm	Not informed	Not informed	Not informed	Not informed	Not informed
Rear travel	45 mm	Not informed	Not informed	Not informed	Not informed	Not informed
Drivetrain
Front chainrings	1	2	2	1	2	1
Smallest chainring	40	30	30	40	32	40
Largest chainring	40	46	46	40	48	40
Rear sprockets	11	10	11	12	10	10
Smallest sprocket	11	11	11	10	11	11
Largest sprocket	42	34	34	45	34	48
Lowest gear	27.6 in	25.6 in	25.6 in	25.8 in	27.3 in	24.2 in
Highest gear	105.5 in	121.3 in	121.3 in	116.0 in	126.6 in	105.5 in
Brakes
Brake type	Hydraulic disc	Hydraulic disc	Hydraulic disc	Hydraulic disc	Hydraulic disc	Mechanical disc
Cockpit
Seatpost	Dropper seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost
Other specifications
Bottom bracket standard	BSA	BSA	BSA	Not informed	BSA	BSA
Fork spring	Air	Not informed	Not informed	Not informed	Not informed	Not informed
Suspension	Full suspension	Rigid	Rigid	Rigid	Rigid	Rigid
Tire width	42c	40c	40c	40c	37c	37c