From dirt trails to gravel paths, revel in the ride with the GT Avalanche Sport mountain bike. This hardtail is built for the rider that seeks efficiency, versatility and fun off-road.
- Completely redesigned alloy frame is stable and durable
- Floating seatstays provide additional compliance and comfort
- Internal cable routing allows for a clean look; includes dropper post routing (dropper post not included)
- Locking 100 mm front fork transitions smoothly from dirt trails to gravel paths
- Tektro hydraulic disc brakes provide controlled stopping power
- Closeout
- NOTE: Specs and images are subject to change based on component availability
Imported.
- 1 year of free adjustments (see more below)
- In-store bike assembly
- Pickup in store or curbside
- Bike experts available at 170+ bike shops
- 20% off shop services
- Free tubes with purchase of flat tire repair (Co-op Cycles brand tubes only; tube must be installed at time of purchase)
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
| Best Use | Mountain Biking |
|---|---|
| Mountain Bike Style | Trail |
| Frame | GT 6061 T6 aluminum Triple Triangle with floating seatstays; Boost 141 forged dropouts; zero stack tapered 1-1/8 to 1-1/2 in. head tube |
| Bike Suspension | Front Suspension |
| Fork | SR Suntour XCT-DS, 100 mm; hydraulic lockout and preload adjust; coil |
| Fork Travel | 100 millimeters |
| Crankset | Prowheel alloy, 36/22T |
| Bottom Bracket | Cartridge, square taper |
| Shifters | 39-29, 2 x 9-speed |
| Front Derailleur | Shimano Altus |
| Rear Derailleur | microSHIFT RD-M36L |
| Rear Cogs | 11-36T |
| Number of Gears | 18 gear(s) |
| Brake Type | Hydraulic Disc Brake |
| Brakes | Tektro M275 hydro disc, 160/160 mm rotors |
| Brake Levers | Tektro M275 hydro disc |
| Rims | WTB SX19, 32H |
| Front Hub | Alloy disc, 100 mm quick-release |
| Rear Hub | Alloy disc, 141 mm quick-release |
| Wheel Size | 29 inches |
| Tires | WTB Ranger Comp, 29 x 2.25 in., DNA Compound |
| Tire Width | 2.25 inches |
| Handlebar Shape | Riser Bar |
| Handlebar | GT All Terra alloy riser, 25 mm rise, 8 deg. sweep, 6 deg. rise, 720 mm width |
| Stem | GT All Terra, 6061 alloy, 31.8 mm, 8 deg. |
| Seat Post | GT All-Terra Micro Adjust alloy seat post, 30.9 mm |
| Saddle | GT MTB |
| Pedals | GT Slim Line Flat pedal |
| Headset | Semi-integrated, sealed cartridge, tapered |
| Chain | KMC Z9, 9-speed |
| Weight | Unavailable |
| Gender | Unisex |
| M | L | XL | |
|---|---|---|---|
| Reach | 42.5 | 45 | 47.5 |
| Stack | 63.7 | 64.6 | 65.6 |
| Standover Height | 73 | 76 | 79 |
| Head Tube Length | 11.5 | 12.5 | 13.5 |
| Head Tube Angle (degrees) | 67.5 | 67.5 | 67.5 |
| Seat Tube Angle (degrees) | 74.5 | 74.5 | 74.5 |
| Bottom Bracket Height | 31.4 | 31.4 | 31.4 |
| Wheelbase | 115.3 | 118.2 | 121.1 |
| Chainstay | 44.5 | 44.5 | 44.5 |
Sizing Notes
Measurements are stated in millimeters unless otherwise indicated.
How we measure bikes
- Standover Height Standover Height is a measurement from the ground to the top of the top tube, measured at the midpoint of the top tube.
- Reach Reach is the horizontal distance from the center of the cranks to the center of the head tube, measured at head tube level.
- Stack Stack is the vertical distance from the center of the cranks to the center of the head tube, measured to the top of the head tube.
- Effective Top Tube Effective top tube is the distance from the center of the head tube to the center of the seat tube/seat post, measured parallel to the ground.
- Seat Tube Center to Top Seat Tube length is the measurement of the seat tube, from the center of the cranks to the top of the seat tube.
- Head Tube Length Head Tube Length is measured from the bottom to the top of the head tube.
- Head Tube Angle Head Tube Angle is the acute angle between the head tube and the ground (measured towards the rear of the bike)
- Seat Tube Angle Seat Tube Angle is the acute angle between the seat tube and the ground (measured towards the rear of the bike).
- Bottom Bracket Height Bottom Bracket Height is a measurement taken vertically from the ground up to the center of the cranks.
- Wheelbase Wheelbase is the measurement from the center of the front axle to the center of the rear axle.
- Chainstay Length Chainstay Length is the measurement from the center of the cranks to the center of the rear axle.
- Fork Offset Fork Offset, or rake, is the distance from the front axle to a line drawn parallel to the center of the head tube or steering axis.