1. 650B (27.5) Mountain Bikes
  2. GT
  3. GT Avalanche Sport 27.5 Blue Silver 2018 650B (27.5) Mountain Bike





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Mountain bike sizing chart (650b (27.5) mountain bike)
Feet and Inches Centimetres Inches Size
4' 10" - 5' 2" 148 - 158 13 - 14 XS
5' 2" - 5' 6" 158 - 168 15 - 16 S
5' 6" - 5' 10" 168 - 178 17 - 18 M
5' 10" - 6' 1" 178 - 185 19 - 20 L
6' 1" - 6' 4" 185 - 193 21 - 22 XL
6' 4" - 6' 6" 193 - 198 23 - 24 XXL
GT Avalanche Sport, - Ladies Hardtail Mountain Bike 27.5, Black 2018

Shipping is free within England, Wales and parts of Scotland. Due to the size and weight of most bikes however, a charge would apply to shipping remote regions, offshore UK and Ireland.

The courier will require a signature for your delivery. If no one is available to sign for your goods, the courier will leave a card with instruction of where you can collect it.

Working days are Monday to Friday. However, there may be circumstances beyond our control which cause delay and in such circumstances we will endeavour to deliver the goods within 7 days of the date the order was made.

GT Avalanche Sport, - Ladies Hardtail Mountain Bike 27.5, Black 2018
GT Avalanche Sport, - Ladies Hardtail Mountain Bike 27.5, Black 2018
Apply for finance online through v12Finance

Our flexible finance options mean you can purchase this product with a minimal deposit (or call us and arrange a deposit that suits you). Before applying for finance, please ensure you have read the information on eligability.

47 24 20.48 538.52
235 36 8.13 527.68
0.00 6 78.33 469.98
0.00 9 52.22 469.98
0.00 12 39.17 470.04
0.00 18 26.11 469.98
0.00 24 19.58 469.92
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Full description: GT Avalanche Sport, - Ladies Hardtail Mountain Bike 27.5, Black 2018 blue silver


Purpose-engineered for the mountain, high on performance but low on cost.

One of the longest running GT models. Often called the little brother to the Zaskar the one thing you cannot call the Avalanche is short on features. With a high-end aluminum frame and geometry similar to the Zaskar, you will be able to be out riding hard without busting your wallet.


Call the store for any additional information or advice

in-stock now!


Tel: 02920 529 955

Very friendly and helpful service. Daughter absolutely loves her new Frog bike.

Cycle to Work Scheme

Save up to £197

Green Commute Initiative (formerly ProC2W)Cycle to WorkCycle Scheme - tax free bikesBikes for the NHS & Bikes for StaffBike to WorkOnYourBikeCycle Solutions

Save up to 42% off

(£197 on this bike)

How it works

  • Anyone paying tax through PAYE (pay as you earn), is elligable.
  • Check with your employer, which cycle to work scheme they are part of.
  • (Your organization can enroll by visiting www.cyclescheme.co.uk.)
  • Complete your cycle to work application, including your employer ref. and purchase amount.
  • Contact us with your cycle to work voucher and save a lot of money!


GEARSET27 gears
BRAKESF Shimano BR-M315, Hydraulic Disc, W- 160mm Rotor SM-RT26, R Shimano BR-M315, Hydraulic Disc, W- 160mm Rotor SM-RT26
FRAMEAll New 6061 T6 Aluminum Frame, w- Triple Triangletm, Replaceable Derailleur Hanger, Disc Brake Mounts, and Zerostack tapered 1 1-8-1 1-2Head Tube, 27.5 Design
FORKSR Suntour XCT-HLO w- 100mm Travel, Steel Stanchions, Aluminum Leg, Post Mount Disc Brake, Hydraulic Lockout, QR, For 27.5 - Fork Travel: 100mm
HEADSETIntergrated seal bearing, 1-1-8 UPPER + 1-1-2 LOWER
REAR DERAILLEURShimano, Alivio, RD-M4000
SHIFTERSShimano SL-M2000, Rapid Fire
CRANKSETAll-Terra V-401, 44-32-22T
HANDLEBAR6061 Aluminum Riser, 680mm Width, 12mm Rise, 31.8mm Clamp, Double Butted
PEDALGT Slim Line Flat Pedal
SEATPOSTAll Terra Alloy Micro-Adjust, 30.9mm
CASSETTESunrace CS-M90, 11-34T, 9-Speed Cassette
SPOKES14G Stainless
RIMSAll Terra ASD10-27.5 Double Wall, 32H 27.5, disc specific
GRIPSGT Statement
SEAT CLAMPAll Terra Alloy QR
STEMAll Terra 1 1-8inch Threadless, 4-Bolt W- CNC Face Plate, 10 Rise, 31.8mm Clamp
BOTTOM BRACKETCartridge Sealed
BRAKE LEVERSShimano Hydraulic Disc Brake Lever
HUBSF Alloy Disc hub, W- Quick Release, R Alloy Cassette Disc hub, W- Quick Release
TYRESAll Terra Cypher 27.5X2.10inch F-R - Tyre Size: 2.10inch - Wheel Size: 27.5inch
CATEGORY650B (27.5) Mountain Bike
SR Suntour XCT 100mm Travel Fork / Shimano 3x9 Shifters and Derailleurs / Shimano Hydraulic Brakes / Town to Trails

Why Damian Harris Cycles

A family run business since 1956, we look after our customers every step of the way. Almost 60 years selling bicycles, means our expertise and knowledge is second-to-none.

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Call 029 2052 9955 or email us and this bike could be yours today!


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