GT Aggressor Comp Mountain Bike 27.5 Inch Black/White (2019)

Now $559.00 RRP $579.00 SAVE $20.00
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The GT Aggressor Comp is an extremely versatile 27.5 inch hardtail mountain bike that is built to take you from the town to the trails. The Aggressor Comp brings capable handling and comfortable, confidence-inspiring performance to the table in a single package. The 6061-T6 Aluminum Triple Triangle™ Frame is the basis for the durability and reliable performance the Aggressor Comp offers. The trusty frame is powered by a 21-speed Shimano Tourney Drivetrain, with enough range to help you up the steepest ascents and descents. The SR Suntour XCT fork with 80mm travel will help you tackle the bumps and then when you’re flying down hill you’ll need some assistance to stop. This is where the Tektro mechanical disc brakes will give you reliable stopping power regardless of the conditions.

The GT Aggressor Comp is an entry-level hardtail mountain bike that can help you commute on weekdays and hit the trails on the weekends, you really can do what you like. The Aggressor Comp is a reliable mountain bike that gives you everything you need to get started at an affordable price.


  • Shimano Tourney Drivetrain, 3x7-speed / Tektro Mechanical Brakes

  • WTB SX19 Double wall rims / WTB Transition 2.25" tires

  • 6061-T6 Aluminum Triple Triangle™ Frame

  • SR Suntour XCT Fork


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More Information
Model Year2019
Bottom BracketCartridge Sealed
BrakesTektro cable-actuated disc, 160/160mm
Brake LeversTektro mechanical lever
CassetteSunrace, 14-34, 7-speed
ChainKMC Z51, 7-speed
CranksetAll Terra, 42/34/24
Derailleur FrontShimano Tourney, 31.8 clamp
Derailleur RearShimano Tourney TX800
ForkSR Suntour XCT, 80mm, Coil
Frame"6061-T6 Aluminum Triple Triangle™ Frame, w/ Replaceable Derailleur Hanger, and 1 1/8"" Head Tube 27.5 Design"
GripsGT Statement logo grips
HandlebarGT All Terra Alloy Riser, 25mm rise, 8° sweep, 6° rise, 700mm
HeadsetSemi Integrated, Sealed cartridge
HubsFormula QR front and rear
PedalsGT Slim Line Flat Pedal
RimsWTB SX19, 32h, Double wall, disc
SaddleGT MTB
SeatpostAlloy Micro Adjust, 15mm setback, 27.2 x 350mm
StemAlloy 1 1/8” Threadless, 4-Bolt W/ CNC Face Plate, 31.8, 8°
SpokesStainless Steel, 14g
ShiftersShimano EF500 Easyfire, 3x7
TyresWTB Transition, 27.5 x 2.25"
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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)

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