How to Choose Mountain Bikes
GT Avalanche Expert Bike
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With smooth shifting, powerful brakes, and 120 mm of front travel, the GT Avalanche Expert bike delivers a confidence-inspiring ride, helping you to progress your singletrack skills.
Shop similar productsKey Details
Wheel Size
27.5 inches
Fork Travel
120 millimeters
Number of Gears
12 gear(s)
- Completely redesigned alloy frame is stable and durable; features Boost 141 forged dropouts with disc brake mounts
- Floating seatstays provide additional compliance and comfort
- RockShox fork with 120 mm travel and remote lockout primes you for better, more efficient riding
- Internal cable routing allows for a clean look; includes dropper post routing (dropper post not included)
- SRAM 1 x 12-speed drivetrain offers intuitive shifting for climbs, descents and straightaways
- Closeout
- NOTE: Specs and images are subject to change based on component availability
Imported.
This bike comes with Coast to Coast Support, which includes:
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.
View all GT Hardtail Mountain Bikes- 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 |
|---|---|
| Frame | GT 6061 T6 aluminum Triple Triangle with floating seatstays; zero stack tapered 1-1/8 to 1.5 in. head tube |
| Mountain Bike Style | Trail |
| Bike Suspension | Front Suspension |
| Fork | RockShox Recon Silver RL, 120 mm travel, remote lockout, Maxle Lite, 42 mm offset |
| Fork Travel | 120 millimeters |
| Crankset | SRAM SX Eagle Power Spline, 32T |
| Bottom Bracket | Truvativ Power Spline |
| Shifters | 12-speed |
| Rear Derailleur | SRAM SX Eagle |
| Rear Cogs | 11-50T, 12-speed |
| Number of Gears | 12 gear(s) |
| Brake Type | Hydraulic Disc Brake |
| Brakes | Tektro M520 hydro disc, 160/160 mm rotors |
| Brake Levers | Tektro M520 hydro disc |
| Rims | WTB ST i25 TCS 2.0, 32H, tubeless ready |
| Front Hub | Shimano MT400, 15 x 100 mm thru axle |
| Rear Hub | Shimano MT200, QRx141 |
| Wheel Size | 27.5 inches |
| Tires | Vittoria Barzo, 27.5/29 x 2.25 in., wire bead |
| Tire Width | 2.25 inches |
| Handlebar Shape | Riser Bar |
| Handlebar | GT All Terra alloy riser, double-butted, 15 mm rise, 9 deg. sweep, 5 deg. rise, 740 mm width |
| Stem | GT All Terra 3D Forged Alloy, 31.8 mm, 7 deg., 80 mm |
| Seat Post | GT All-Terra Micro Adjust alloy, 30.9 mm |
| Saddle | WTB Silverado Sport |
| Pedals | GT Slim Line Flat pedal |
| Headset | Semi-integrated, sealed cartridge, tapered |
| Chain | 12-speed |
| Weight | Unavailable |
| Gender | Unisex |
GT Bikes (212692, 212640)
| XS | S | M | L | |
|---|---|---|---|---|
| Reach | 39.3 | 40.5 | 42.8 | 45 |
| Stack | 57.8 | 58.8 | 59.7 | 60.6 |
| Seat Tube Center-Top | 35.5 | 38 | 43 | 48.5 |
| Standover Height | 69.8 | 71.7 | 75.2 | 79.1 |
| Head Tube Length | 9 | 10 | 11 | 12 |
| Head Tube Angle (degrees) | 68.5 | 68.5 | 68.5 | 68.5 |
| Seat Tube Angle (degrees) | 73 | 73 | 73 | 73 |
| Bottom Bracket Height | 30.2 | 30.2 | 30.2 | 30.2 |
| Wheelbase | 107.6 | 109.2 | 111.8 | 114.3 |
| Chainstay | 43.5 | 43.5 | 43.5 | 43.5 |
| Fork Offset | 4.2 | 4.2 | 4.2 | 4.2 |
Sizing Notes
Measurements are stated in centimeters 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.
