GT Aggressor Expert Mountain Bike Silver (2021)
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Every bike comes 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.
Please Note: Specifications may be subject to change for this bike, please check with your local store for more information.
The GT Aggressor Expert is an agile hardtail that will help you ride like an expert from day one. This bike could be your everyday bike to go from the trails to your local bike paths and everywhere in between. I tall starts with then lightweight 6061 alloy frame with floating seat stays which 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 components, including microSHIFT front and rear derailleurs, shifters and cassette. It all adds up to a reliable recreational mountain bike with components and design that will last for hours of fun on the trails.
Specifications
- 6061 T6 Alloy Frame
- Suntour XCM-DS Fork - 80mm Travel
- microSHIFT Drivetrain
- Tektro M275 Hydraulic Disc Brakes
- WTB Ranger Comp 27.5"x2.25" Tyres
- Size Split: XS/SM - 27.5", MD,LG,XL- 29"
SKU | 21GTaggressorexpertsilver |
---|---|
Season | 2021 |
Sizing SKUs | LG: GTG28101M20LG, MD: GTG28101M20MD, SM: GTG28101M20SM, XL: GTG28101M20XL, XS: GTG28101M20XS |
Click & Collect | Yes |
Frame | GT 6061 T6 Aluminium Frame, Triple Triangle w/ Floating Seat Stays, Forged Drop-outs w/ Disc Brake Mounts, Zero Stack 1 1/8” Head Tube, 27.5/29” Wheels |
Frame Material | Alloy |
Fork | SR Suntour XCM-DS, 80mm, Hydraulic Lockout and Preload, Coil |
Fork Brand | Suntour |
Front Travel | under 100mm |
Speeds | 3 x 8 |
Front Gears | Triple |
Groupset Brand | MICROshift |
Groupset | MICROshift Thumb-Tap |
Rear Gears | 8 Speed |
Crankset | Prowheel TA-CM68-D 42-34-24T |
Pedals | GT Slim Line Flat Pedal |
Chain | KMC Z8.3, 8-speed |
Brake Type | Hydraulic Disc Brake |
Brakes | Tektro M275 Hydro Disc, 160/160mm Rotors |
Shifters | Microshift TS38 8s Thum-tap Shifters |
Brake Levers | Tektro M275 Hydro Disc, 160/160mm Rotors |
Derailleur Front | Microshift FD-M20 |
Derailleur Rear | Microshift RD-M26L |
Cassette | Microshift CS-H081 8s, 12-32T |
Wheel Size | 29" / 27.5" (Varies by Frame Size) |
Tyres | WTB Ranger Comp, 27.5/29 x 2.25", DNA Compound |
Rims | WTB SX19, 32h |
Hubs | Alloy Disc Cassette QR, 28H |
Spokes | Stainless Steel, 14g |
Bottom Bracket | Cartridge, Square Taper |
Handlebar | GT All Terra Alloy Riser, 25mm Rise, 8° Sweep, 6° Rise, 720mm Width |
Headset | Semi-integrated, Sealed Cartridge |
Grips | GT Statement |
Stem | GT All Terra, 6061 Alloy, 31.8, 8° |
Saddle | GT MTB |
Seatpost | GT All Terra Two Bolt Alloy |
GT Bikes Aggressor Sizing Chart
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.

Legend
ST Seat Tube
TT Top Tube
CS Chain Stay Length
HTA Head Tube Angle
STA Seat Tube Angle
BD Bottom Bracket Drop
HT Head Tube
FL Fork Length
R Reach
S Stack
WB Wheel Base
Size |
XS | SM | MD | LG | XL | Wheel Size | 29" / 27.5" (Varies by Frame Size) | 29" | 29" / 27.5" (Varies by Frame Size) | 29" / 27.5" (Varies by Frame Size) | 29" / 27.5" (Varies by Frame Size) | Frame Size | XS | SM | MD | LG | XL | ST Seat Tube (mm) | 380.0 | 420.0 | 460.0 | 500.0 | 540.0 | TT Top Tube (mm) | 532.0 | 562.0 | 580.0 | 601.0 | 624.0 | CS Chain Stay Length (mm) | 440.0 | 445.0 | 445.0 | 445.0 | 445.0 | HTA Head Tube Angle (°) | 68.5 | 68.5 | 68.5 | 68.5 | 68.5 | STA Seat Tube Angle (°) | 73.5 | 73.5 | 73.5 | 73.5 | 73.5 | HT Head Tube (mm) | 110.0 | 120.0 | 130.0 | 140.0 | 150.0 | R Reach (mm) | 379.0 | 399.0 | 420.0 | 440.0 | 459.0 | S Stack (mm) | 566.0 | 610.0 | 619.0 | 628.0 | 638.0 | WB Wheel Base (mm) | 1075.0 | 1117.0 | 1141.0 | 1165.0 | 1188.0 |