2021 GT Aggressor Expert Hardtail Mountain Bike in Silver

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2021 GT Aggressor Expert Hardtail Mountain Bike in Silver is an off-road friendly hardtail mountain bike that’s also perfect for everyday recreational use.

The GT Aggressor is built around a lightweight 6061 alloy triple triangle frame. It has floating seat stays for a smoother ride, forged drop-outs, improved external cable routing, zero-stack 1 1/8” head tube, 135mm rear spacing and a replaceable derailleur hanger. The Extra small frame sizes use a 27.5” wheel and the small, medium, large and Extra large bikes use a 29” wheel to make the bike better fit all sizes of rider. Pannier rack and mudguard mounts make the bike more versatile and easily lets you turn it onto a tough commuter.

The Aggressor Comp comes with a Suntour suspension fork with lockout to make riding on the road more efficient. Tektro hydraulic disc brakes add great all-weather stopping power. The reliable Microshift 3 x 8 gearing gives you plenty of gears for getting up the hills.

This bike is perfect forRiders who want a mountain bike for general recreation use and commuting that is also capable of tackling proper off-road rides. With hydraulic brakes and a suspension for with lockout this bike is more efficient on the road and stops you better off-road.

Key Features

  • Blended wheel-size accommodates a wide range of riders XS (27.5"), S, M, L, XL(29")
  • The floating seat stays provide a more comfortable ride
  • Rack and mudguard ready for maximum utility
  • Tektro hydraulic disc brakes and Suntour suspension fork with lockout

Please note GT made significant changes to the specification of this bike after the first shipments arrived in the UK. Exact specifications on bikes may vary.

Mountain Bike Buying Guide

Mountain biking is an incredibly diverse sport. Mountain bikes now come in three main flavours. They are XC, Trail and Enduro.

XC – short for cross country, are quick race bikes. They will normally have 29” wheels and come with 100mm of suspension. If you are mainly going to be riding bridleways and natural trails in the South East of England, where our shops are, an XC bike will be the quickest and most efficient option.

Trail – these bikes are designed to be pedalled up and down hill and for use on bridleways and natural trails, but also at dedicated trail centres. They normally come with 130mm or 140mm of suspension travel and can have either 27.5” or 29” wheels, but 29” is quickly becoming the norm. Trail bikes are good all-rounders. They won’t be as fast as an XC bike on the flat but they can handle a lot more challenging terrain, and a few jumps. If you plan on taking your bike to trail centres in Wales, or to the Alps, then a trail bike may be your best option.

Enduro – enduro racing is a thing in and of itself but many people buy enduro bikes for ‘aggressive’ trail riding and uplift days at places like Bike Park Wales. This generally means challenging downhill trails with some big jumps. With around 160mm of suspension travel enduro bikes can take some big hits. They are designed to be efficient enough to pedal up hills but really come into their own when pointed downhill. You get enduro bikes in either 27.5” or 29” wheel sizes as well as mullet setups of 29 at the front and 27.5 at the back.

Men’s and women’s mountain bikes

Nearly all the mountain bikes we sell are now unisex. All of the big brands have gradually stopped doing dedicated men’s and women’s bikes over the last few years. Instead they are focussed on producing bikes in a bigger range of sizes. So, for instance, the Trek Marlin 5 is a unisex bike that now comes in sizes from XXS to XXL large. This means it will fit riders from 4’ 5” to 6’ 5” and everything in between.

Read our full mountain bike buyers guide

Price Match at Cycles uk

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Please note GT made significant changes to the specification of this bike after the first shipments arrived in the UK. Exact specifications on bikes may vary.

Frame GT 6061 T6 Aluminum 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
Fork SR Suntour XCM-DS, 80mm, Hydraulic Lockout and Preload, Coil
Rims WTB SX19, 32h
Spokes Stainless Steel, 14g
Tires WTB Ranger Comp, 27.5/29 x 2.25", DNA Compound
Pedals GT Slim Line Flat Pedal
Bottom Bracket Cartridge, Square Taper
Chain KMC Z8.3, 8-speed
Rear Cogs MICROSHIFT CS-H081 12-32
Front Derailleur MICROSHIFT FD-M20
Rear Derailleur MICROSHIFT RD-M26L
Shifters MICROSHIFT TS38-8
Handlebar GT All Terra Alloy Riser, 25mm Rise, 8° Sweep, 6° Rise, 720mm Width
Grips GT Statement
Stem GT All Terra, 6061 Alloy, 31.8, 8°
Headset Semi-integrated, Sealed Cartridge
Brakes Tektro M275 Hydro Disc, 160/160mm Rotor
Saddle GT MTB
Seatpost Promax SP-222
Speeds 24 Speed
Front Hub Alloy Disc, QR

Rear Hub Sealed Alloy Disc, QR

Colours Silver
Sizes Large, Medium, XSmall
Brand GT
Barcodes 38675205444, 38675205529, 38675205536, 38675205543, 38675205550
SKUs / Part Numbers G28101M20LG, G28101M20MD, G28101M20SM, G28101M20XL, G28101M20XS

Please note: Manufacturers can sometimes change the specification of the products from time to time.

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