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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.
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.
GT

GT Avalanche Expert 27.5 - 2019 Mountain Bike

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Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
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Hassle free returns

At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged. In the event an item is returned to ourselves in an unsuitable condition, we may have to return the item or offer a partial refund. Unless the return is due to a faulty product or an incorrect delivery on our part you will have to cover the cost of the return. If you believe that we should be covering the cost of the return please contact us in advance to discuss the available options.

In line with the customer rights act 2015 if you receive an item that is faulty, of un-satisfactory quality, unusable or that differs from how the product is described you are entitled to return the item for a full refund within 30 days of purchase.

Small Items - Parts & Accessories

Include the returns form and send it to us with the delivery company of your choosing - easy peasy!

Larger Items - Bikes / Bulky Items

If you wish to return bikes or bulky items such as forks or turbo trainers please contact our Returns Department to arrange a special courier collection. Contact us on our email address websales@99bikes.co.uk We can arrange collection for you from your home or work address, using our couriers ( You may be required to cover postages costs )

* Bulky Items Include - Bikes - Wheels/wheelsets - Turbo Trainers - Framesets - Forks - Groupsets - Car racks - Child Seats

Warranty Claims

Please contact us prior to returning so we can ensure the fastest suitable resolution for you: websales@99bikes.co.uk. We also ask that you contact us before having a 3rd party undertake work on an item purchased from 99 Bikess. Any work carried out without 99 Bikes consent will not be eligible for reimbursement and may void future warranty claims for that item.

GT Avalanche Expert 27.5 - 2019 Mountain Bike

Season:2019

Brand:GT

Code:G27129MORG

All UK Mainland Bike Deliveries Over £999 - Free

Bike orders are sent via TNT/FedEx with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).
Bike orders under £999 will incur a £20 delivery fee

Free Delivery On Orders Over £50.00

When you spend more than £50.00 at 99 Bikes deliveries to a UK mainland address will be free (excludes bikes & large items).

Certain regions and territories of the UK will incur additional charges, details of which can be found on our delivery page.

Click & Collect Orders

Please be aware Click & Collect orders may take some time to fulfil. We advise not to travel to your chosen store until you have been notified that your order is ready for collection.

Spread the cost of your new bike, helmet, safety equipment and accessories paying via instalments being taken directly from your wage. The payments for the Cycle To Work scheme are taken out of your gross wage and your Tax & NI contributions are then worked out based on your new lower gross wage which is how you save money on your new bike and equipment.

At the end of the time period specified with your Cycle To Work scheme you then have the option of buying your bike or to continuing to use it while you work for the company. If you decide to purchase the bike, the balance you owe will be based on a percentage of how much the bike was worth at the time you took out the Cycle To Work scheme.

We know how eager you'll be to jump on your new bike and hit the dirt or tarmac, so we give you everything you need to get you set up quickly. For full instructions on how you're bike will arrive and what you'll need to do, visit our How Our Bikes Are Built page

Easy Set-Up Instructions

Have your brand spanking new bike ready to ride in less than 15 minutes with our easy to follow guide.

Free Multi-Tool

9 in 1 multi-tool to help you set up and maintain your bike.

Free Pedal Spanner

Attach your pedals with ease using our free tool. Please note pedals are not included with all bikes so please check the specification. You can shop our awesome range of pedals HERE

Technical Information

Product Weight: N/A

Frame: 6061 T6 Aluminum Frame, w/ Triple Triangle™, Replaceable Derailleur Hanger, Disc Brake Mounts, and Zerostack tapered 1 1/8-1 1/2Head Tube, 27.5/29 Design

Rear Shock: N/A

Front Fork: RockShox Recon RL, 100mm, Solo Air, 15x110mm, tapered steerer

Head Set: Semi Integrated, Sealed cartridge

Stem: All Terra Alloy 1 1/8” Threadless, 4-Bolt W/ CNC Face Plate, 31.8, 7°

Handlebars: GT All Terra Alloy Riser, Double-butted, 15mm rise, 9° sweep, 5° rise, 740mm

Tape/Grips: GT Statement logo grips

Front Brake: N/A

Rear Brake: Shimano disc, 160/160mm

Rear Derailleur: Shimano SLX

Shift Levers: Shimano SLX, 1x11

Cassette: Sunrace, 11-46, 11-speed

Chain: KMC X11, 11-speed

Crank Set: KMC X11, 11-speed

Front Rim: WTB STP i23 TCS, 32h

Rear Rim: WTB STP i23 TCS, 32h

Front Hub: Formula 15x100 front, QR rear

Rear Hub: Formula 15x100 front, QR rear

Front Tyre: WTB Ranger Comp, 27.5/29 x 2.25", DNA Compound

Rear Tyre: WTB Ranger Comp, 27.5/29 x 2.25", DNA Compound

Saddle: WTB Silverado Sport

Seat Post: All Terra Micro Adjust, 6061 Alloy, 30.9 x 350mm

Battery/Motor: N/A

Bottom Bracket: Cartridge Sealed

Front Derailleur: N/A

Pedals: GT Slim Line Flat Pedal

Sizing Information
GT Hardtail Mountain Bikes

SizeXSSMLXL
Height (cm)152 - 160160 - 170170 - 178178 - 188188 - 196
Height (ft/in)5' 0" - 5' 3"5' 3" - 5' 7"5' 7" - 5' 10"5' 10" - 6' 2"6' 2" - 6' 5"

GT Full Suspension Mountain Bikes

SizeSMLXL
Height (cm)158 - 168168 - 178178 - 188188 - 196
Height (ft/in)5' 2" - 5' 6"5' 6" - 5' 10"5' 10" - 6' 2"6' 2" - 6' 5"

GT Road Bikes

SizeXSSMLXLXXL
Height (cm)152 - 160160 - 170170 - 178178 - 182182 - 199190 - 200
Height (ft/in)5' 0" - 5' 3"5' 3" - 5' 7"5' 7" - 5' 10"5' 10" - 6' 0"6' 0" - 6' 3"6' 3" - 6' 7"
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