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Trek Roscoe 8 Mountain Bike 2021

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Roscoe 8 Mountain Bike 2021

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Product ID: 1172457

The Trek Roscoe 8 Mountain Bike is an aluminium hardtail with 120mm of front suspension from the RockShox 35 Gold Solo fork and a dropper seatpost to underline its credentials as a great off-road option.

27.5” wheels keep the handling nimble whilst the Shimano hydraulic disc brakes and SRAM 12-speed gears are reliable and simple to operate even in wet and muddy conditions.

Why buy your bike from Sigma Sports?

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Built, Checked, Tuned and Tested

All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.

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Trek Roscoe 8 Mountain Bike 2021

Trek’s Roscoe 8 Mountain Bike is a fine choice, for those new to the discipline as well as more experienced riders looking for a great value all-rounder. With 12-speed gears from SRAM and hydraulic disc brakes from Shimano, there is no questioning its validity as a serious mountain bike, especially when combined with Trek’s envious heritage in the sport.

The Alpha Gold Aluminium frame has a tapered head tube and is both lightweight and stiff enough for efficient power transfer whilst the wide 2.8” tyres and 120mm RockShox 35 Gold suspension fork keep the ride comfortable and the grip levels high. The TranzX dropper seatpost allows the saddle to be lowered (and raised again) instantly for greater control when descending steeply or enjoying flowing over the technical ground, while the 27.5” wheels also increase the bike’s agility.


  • Trek Alpha Gold Aluminium frame with rack and kickstand mount
  • RockShox 35 Gold, Solo Air spring fork with 120mm travel
  • SRAM NX Eagle 12-speed drivetrain
  • Shimano MT500 hydraulic disc brakes
  • Bontrager Line 40 tubeless-ready 27.5” wheels
  • TranzX JD-YSP18 dropper seatpost

Technical Specification

Frame Trek Alpha Gold Aluminium, tapered head tube, internal derailleur and dropper post routing, rack and kickstand mount, Boost141, 5mm QR
Fork RockShox 35 Gold, Solo Air spring, Motion Control damper, lockout, tapered steerer, 44mm offset, Boost110, 15mm Maxle Stealth, 120mm travel (Size XS
Headset Semi-integrated, cartridge bearing, 1-1/8" top, 1.5" bottom
Bottom Bracket Truvativ Powerspline, 73mm, threaded cartridge, 118mm spindle
Stem Bontrager Rhythm Comp, 31.8m, Knock Block, 0 degree
Handlebar Bontrager alloy, 31.8mm, 15mm rise
Grips Bontrager XR Trail Comp, nylon lock-on
Brakes Shimano MT500 hydraulic disc
Brake Levers Shimano MT501 hydraulic disc
Rear Derailleur SRAM NX Eagle, 12-speed
Shift Levers SRAM NX Eagle, 12-speed
Cassette SRAM PG-1230 Eagle, 11-50, 12-speed
Chain SRAM NX Eagle, 12-speed
Crankset Truvativ Descendant 6k Eagle, GXP, 30T alloy ring, Boost
Front Wheel Bontrager Line 40, tubeless-ready, 28-hole, 40mm width, Presta valve rim with Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru-axle hub
Rear Wheel Bontrager Line 40, tubeless-ready, 28-hole, 40mm width, Presta valve rim with Formula DCL-141Q, sealed bearing, 6-bolt, Boost141, 5mm QR hub
Tyres Maxxis Rekon, wire bead, 60 TPI, 27.5X2.80" clincher
Saddle Bontrager Arvada, steel rails, 138mm width
Seatpost TranzX JD-YSP18 dropper, internal routing, 31.6mm
Pedals VP-536 nylon platform
Manufacturer Claimed Weight S - 14.55 kg / 32.07 lbs (with tubes)

Built, Checked, Tuned and Tested

All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.

All bikes collected from our shop, are built, tested and ready to ride.

Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance or contact Customer Care. We do not install accessories to bikes, including mudguards.

Trek Roscoe 8 Mountain Bike 2021 Sizing

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