GT Aggressor Sport Mountain Bike Satin Black (2020)

Now $522.00 RRP $539.00 SAVE $17.00
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Available on orders over $40. Collection in 1-7 days. WA orders 1-14 days. More info »

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Up to 12 months interest free


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Perfect Ride Guarantee
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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 Service
Every bike come with a complimentary free service and safety check.

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 M3030 fork can handle some of the rougher trails in relative comfort. The cable actuated mechanical disc 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, as well as Shimano EZ Fire EF41 shifters. 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
Bottom Bracket Cartridge, square taper
Brake Levers Alloy
Brakes Cable actuated mechanical disc, 160/160mm rotors
Cassette Sunrace, 14-34, 7-speed
Chain KMC Z51, 7-speed
Crankset All Terra, 42/34/29
Derailleur Front Shimano Tourney, 31.8 clamp
Derailleur Rear Shimano Tourney
Fork SR Suntour M3030, 75mm, 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
Model Year 2020
Pedals GT Slim Line Flat Pedal
Rear Shock Null
Rims WTB SX19, 32h
SKU 2020GTAggressorSportSatinBlack
Saddle GT MTB
Seatpost Alloy Micro Adjust 27.2 x 300mm
Shifters Shimano EZ Fire EF41, 3x12
Shipping Weight 0.0000
Stem 6066 Alloy, 31.8, 8°, 90mm
Tyres WTB Ranger Comp, 27.5/29 x 2.25", DNA Compound
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About GT Bicycles

GT'S story is simple: speed, speed and even more speed. From GT’s namesake Gary Turner designing one of the first BMX race bikes in 1972 to the modern carbon fiber creations that redefine fast-as-hell, GT has built a long legacy of racing, winning, yet never taking things too seriously.

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GT Hardtail Bike Sizing Chart

Rider's Height (cm)

This is an accurate estimate, and every new bike comes with a free professional bike fit when you click & collect in store, plus all bikes have a 30 day Perfect Ride Guarantee.