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How Bike Delivery Works

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Delivered ready to ride in 4 to 10 days

How Bike Delivery Works
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Place your order

Select the product you are interested in, Select delivery and type in your postcode, Select Bike Delivery, if this is not available there is no available stock nearby

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Order Confirmation

Once your order is placed we will be in contact with you within 2 hours, to confirm your order.

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Bike Build

Your bike will be built up at your local 99 bikes by one of our expert mechanics and safety checked prior to delivery.

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Your bike is delivered to your door by a 99 Bikes expert who will walk you through your new bike and answer any questions you may have.

GT Aggressor Expert Mountain Bike Satin Silver (2020)

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Up to 12 months interest free

or 4 interest-free payments of  $169.75
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Perfect Ride Guarantee

Perfect Ride Guarantee
If you don't love it, you can swap it, up to 30 days from purchase!* Learn more »

Free Bike Build

Free Bike Build
We'll build your bike for free when you click and collect at any 99 Bikes store.

First Free Service

First Free Tune-up
Every bike come with a complimentary free tune-up and safety check.

Please note, due to challenges in the product supply chain, bike specifications are subject to change without notice. Specifications listed below may not match exactly as shown in the photo.

Please Note: GT is not available in our ACT stores.

The GT Aggressor Expert hardtail mountain bike is ideal for the recreational rider that wants to get out and explore their local trails. The Aggressor is built with a high-quality 6061 alloy frame which is lightweight and durable so that you can have confidence in your ride. The floating seat stays improve comfort so you can spend more time in the saddle and enjoy the Aggressor on longer rides. GT built his bike for off-road use but it's also a capable commuter rolling on the fast WTB Ranger Comp tyres and WTB SX19 rims.

While the SR Suntour XCM-DS fork with 80mm travel can handle some of the rougher trails in relative comfort. But the Tektro M275 Hydraulic Disc Brakes really are the standout on the Aggressor, offering excellent stopping power on any trails and in any conditions. GT equipped this bike with a range of high-quality Shimano components, including front and rear derailleurs, Shimano M315 Rapidfire Plus 8-speed shifters and a Shimano Acera cassette. The GT Aggressor Expert is a reliable recreational mountain bike with components and design that will last.


  • Now with blended wheel-size accommodates a wide range of riders XS,S (27.5"), M,L,XL(29")
  • Floating seat stays provide a more comfortable ride
  • Rack and fender ready delivers max utility
  • All new 6061 alloy triple triangle frame design.
More Information
SKU 2020GTAggressorExpertSatinSilver
Season 2020
Click & Collect Yes
Wheel Size 27.5" (650b)
Frame Material Alloy
Groupset Brand Shimano
Groupset Shimano Altus
Cassette Type 8 Speed
Fork Brand Suntour
Chainset Type Triple
Brake Type Hydraulic Disc Brake
Front Travel under 100mm
Bottom Bracket Cartridge, square taper
Brakes Tektro M275 hydro disc, 160/160mm rotors
Brake Levers Tektro M280
Cassette Shimano Acera, 12-32, 8-speed
Chain KMC Z72, 8-speed
Crankset All Terra, 42/32/27
Derailleur Front Shimano Tourney, 31.8 clamp
Derailleur Rear Shimano Altus
Fork SR Suntour XCM-DS, 80mm, hydraulic lockout and preload, Coil
Frame All new 6061 T6 Aluminum frame, Triple Triangle with floating seat stays, Forged drop-outs with disc brake mounts, Zero stack 1 1/8" head tube, 27.5/29" wheels
Grips GT Statement2 Single Lock-on Grips
Handlebar GT All Terra Alloy Riser, 25mm rise, 8° sweep, 6° rise, 720mm width
Headset Semi Integrated, Sealed cartridge
Hubs Sealed Alloy Disc, QR
Pedals GT Slim Line Flat Pedal
Rims WTB SX19, 32h
Saddle GT MTB
Seatpost Alloy Micro Adjust, 15mm setback, 27.2 x 350mm
Stem 6066 Alloy, 31.8, 8°, 90mm
Shifters Shimano M315 Rapidfire Plus, 8-speed
Tyres WTB Ranger Comp, 27.5/29 x 2.25", DNA Compound
Speeds 3 x 8
Sizing SKUs LG: GTG28100M10LG, MD: GTG28100M10MD, SM: GTG28100M10S7, XL: GTG28100M10XL, XS: GTG28100M10XS

GT Hardtail Bike Sizing Chart

Rider's Height (cm)

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How Same Day Delivery Works?

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Delivered before 8:30pm same day

How Same Day Delivery Works
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Place your order

All Orders placed before 3pm will be booked for same day shipping. Orders placed after 3pm will be delivered next day.

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Order Confirmation

Once your order is placed we will be in contact with you within 2 hours, to confirm your order.

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Pick up and Tracking

Our trusted courier partner will pick up your order and send you tracking information.

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Your order will be delivered before 8:30 pm on the same day the order was placed.