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Delivered ready to ride in 10 to 14 days.

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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.

Next Business Day Delivery

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Delivered before 8pm next business day.

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Delivered boxed in 2 - 4 weeks

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Your bike will be sent boxed through a courier to your delivery address. Authority to leave must be provided.

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Your bike will be delivered to your delivery address within 2 - 4 weeks

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GT Aggressor Expert 27.5 Mountain Bike Yellow (2017)

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Up to 12 months interest free

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

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

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

Please note that, in order to reduce production and delivery times, bike specifications are subject to change by the manufacturer without notice. Please be aware that these changes might not be reflected on product pages and images.

GT Aggressor Expert is a hardtail mountain bike designed for entry level riders. Aggressor Expert is a versatile bike for around town riding and bike paths, as well as light off-road riding.

GT Aggressor Expert features 27.5 inch wheels have quickly gained popularity amongst mountain bikers. The 27.5 size offers a balance of reduced rolling resistance, which characterises 29ers, and the agility and handling of smaller 26 incher wheels. Larger wheels are able to hit obstacles at a lesser angle than smaller wheel sizes, meaning reduced resistance and loss of momentum as the bike rolls over the obstacle and continues along the trail. New riders will also love the feeling of improved stability and traction, as the big wheels allow for more tyre tread in contact with the ground.

Aimed at the off road user who is just starting out, the GT Aggressor offers a lightweight alloy frame, which makes it both light and durable. The riding position balances comfort with confidence in handling. Shimano components offer quality and reliabliity in shifting, while disc brakes give excellent stopping power in any conditions.

FEATURES: 

  • All Terra HLO Fork
  • Shimano 3x8 Drivetrain
  • Tektro Hydraulic Disc Brakes

SPECIFICATIONS: 

Sizes:XS, S, M, L, XL
Frame:All new 6061-T6 Aluminum Triple Triangle? Frame, w/ Replaceable Derailleur Hanger, 27.5 Design
Fork:All Terra CH-525 HLO , 29mm Stanchions, alloy Lower legs 80mm travel for 27.5, disc brake specifc
Rear Shock:N/A
Chain:KMC Z72
Crankset Chainwheel:15
Crank:All-Terra Forged Alloy 42/34/24T
Crank Option 1:All-Terra Forged Alloy 42/34/24T
Bottom Bracket:Cartridge Sealed
Pedals:GT Slim Line Flat Pedal
Front Derailleur:Shimano TY500
Rear Derailleur:Acera
Shifters:Shimano
Cog Set:Sunrace, 11-34T, 8-Speed Cassette UPC
Rims:All Terra Double Wall, 32H 27.5, disc specific
Tires:(F&R) All Terra Cypher 27.5X2.1"
Hubs:(F) Alloy Disc QR, (R) Alloy Cassette Disc QR
Brake:(F&R) Tektro Hydro Disc, 160mm Rotor
Brake Levers:Tektro Disc Brake Lever
Handlebar:6061 Aluminum Riser, 640mm Width, 12mm Rise, 31.8mm Clamp
Stem:Alloy 1 1/8" Threadless, 4-Bolt W/ CNC Face Plate, 10? Rise, 31.8mm Clamp
Grips:GT Statement
Headset:1 1/8" Ahead
Saddle:All Terra MTB
Seat Post:Alloy Micro Adjust
Seat Clamp:Alloy QR
 

GEOMETRY: 

Aggressor Expert Geometry

AVAILABLE ONLINE (CLICK & COLLECT) & IN-STORE

More Information
SKU 17GTAggressorExpertHydr27.5Yellow
Season 2017
Sizing SKUs LG: GTG28117M70LG, XS: GTG28117M70XS
Click & Collect Yes
Wheel Size 27.5" (650b)

GT Hardtail Bike Sizing Chart

Rider's Height (cm)
145
150
155
160
165
170
175
180
185
190
SM
MD
LG
XL

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