GT Avalanche Sport

Name: GT Avalanche Sport
Brand: GT

2026 MountainCross-country Manufacturer page

Last known price: $850

Prices shown first for United States
Fork travel: 100 mm
Wheels: 27.5″
Drivetrain: 2 × 9 22–36t / 11–36t
Gear range: 536%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 142.2–154.9
SM 152.4–167.6
MD 165.1–180.3
LG 177.8–188
XL 185.4–198.1

Components

17 of 21 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

GT Alloy Triple Triangle, 27.5/29" Wheels, replaceable hanger Not identified

Suspension

1 part

Fork
- SR Suntour

Drivetrain

7 parts

Bottom bracket

BSA, Square Taper Not identified
Cassette
- microSHIFT 11–36t
Chain
- KMC Z9 9 speeds
Crankset
- Prowheel 36/22t
Front derailleur
- Shimano Altus
Rear derailleur
- microSHIFT Mezzo Rear Derailleur 8/9 Speed Long Cage 9 speeds
RD-M36L
Shifters
- microSHIFT Thumb Tap Shifters 2×9 – TS39 9 speeds

Brakes

1 part

Brakes
- Tektro

Wheels and tires

4 parts

Front hub

Alloy Disc, QR, 32H Not identified
Rear hub
- Formula
Rims
- WTB
Tires
- WTB

Cockpit and contact points

7 parts

Grips
- GT
Handlebar
- GT
Headset

Semi-integrated, Sealed Cartridge Not identified
Pedals
- GT
Saddle
- GT
Seatpost
- GT
Stem
- GT

Sizes and geometry

5 sizes

Enter your height to highlight matching ranges.

Size Reported by the manufacturer

Geometry not published

The manufacturer lists these sizes without frame measurements, so there is no drawing or geometry table.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum

Suspension

Suspension configuration: Hardtail
Front travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 22
Largest chainring: 36
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 16.8 in
Highest gear: 90.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Coil
Tire width: 2.25″
Wheel material: Aluminum
Wheel size: 27.5″

Technical analysis

2 measures

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

Front travel

100 mm

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2026
Sample: 1,206 bicycles with this information
Coverage: 90.0% of the class

Shifting

Mechanical

156 of 1,315 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2026
Sample: 1,315 bicycles with this information
Coverage: 98.2% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.4 km/h
Highest gear: 34.5 km/h

Total gear range 535%

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: 16.8–90.0 gear inches

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 2026 builds
Specification	This bicycle GT Avalanche Sport	GT Avalanche Comp	GT Avalanche Elite	GT Avalanche Expert
Drivetrain
Front chainrings	2	1	1	1
Smallest chainring	22	32	32	32
Largest chainring	36	32	32	32
Rear sprockets	9	10	11	12
Largest sprocket	36	42	46	50
Lowest gear	16.8 in	21.0 in	19.1 in	17.6 in
Highest gear	90.0 in	80.0 in	80.0 in	80.0 in
Other specifications
Fork spring	Coil	Coil	Coil	Not informed