GT Avalanche Comp 27.5" 2017 Mountain Bike

What are the delivery costs?

We offer Free UK Mainland Delivery on all orders over £20. Products shipped to outlying UK regions are excluded from free shipping.

Standard delivery is normally 2 - 5 working days.

Please view our delivery page for full information on UK and international delivery costs.

Avalanche, a staple of the GT mountain line-up. Often referred to as the little brother to the Zaskar, the Avalanche packs a great off-road punch with truly amazing value for money. With a high-end aluminium frame and geometry similar to the Zaskar, you will be able to tear up the trails without busting your wallet.

Key Features:
  • 27.5” Wheels for improved traction and rollover
  • Hydroformed Alloy Triple Triangle frame for a lightweight and durable ride
  • Progressive Geometry provides a longer Front Centre for better balance, better climbing traction, and dialed-in descending control. 
  • 100mm Fork to provide comfort on those long rides
  • Remote Lockout on fork for those who need it


Frame All New 6061 T6 Aluminum Frame, w/ Triple Triangle™, Replaceable Derailleur Hanger, Disc Brake Mounts, and Zerostack tapered Head Tube, 27.5 Design
Forks SR Suntour XCM-HLO w/ 100mm Travel, Steel Stanchions, Aluminum Leg, Post Mount Disc Brake, Hydraulic Lockout, QR, For 27.5
Rear_Shock N/A
Headset Integrated seal bearing, 1-1/8” Upper + 1-1/2” Lower
Handlebars 6061 Aluminum Riser, 680mm Width, 12mm Rise, 31.8mm ClampGT Statement
Stem All Terra 1 1/8" Threadless, 4-Bolt W/ CNC Face Plate, 10° Rise, 31.8mm Clamp
Shifters 27 Speed Shimano Alivio
Front_Mech Shimano Acera
Chainset All-Terra V-401, 44/32/22TN/A
Bottom_Bracket Cartridge Sealed
Chain KMC Z99
Cassette Sunrace CS-M98, 11-36T, 9-Speed Cassette
Front_Brake Shimano Hydraulic Disc, 160mm Rotor
Rear_Brake Shimano Hydraulic Disc, 160mm Rotor
Rims All Terra Double Wall, 32H 27.5, disc specific
Front_Hub All Terra Alloy Disc QR
Rear_Hub Alloy Cassette Disc QR
Tyres All Terra Cypher 27.5X2.1" Front
All Terra Cypher 27.5X2.1" Rear
Seatpost All Terra Alloy Micro-Adjust, 30.9mm
Pedals GT Slim Line Flat Pedal

Occasionally, without notice, manufacturers change product design and/or specifications.