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Aluminium hardtail mountain bike Trek Roscoe 8 GX Eagle mulsanne blue 12-speed

Aluminium hardtail mountain bike Trek Roscoe 8 blue: 140 mm fork, 29 x 2.60in tyres, Eagle 1x12, 13.54 kg

kr12,456.29 Incl. Tax

~~kr27,571.65~~ MSRP

-54%

Recommended supplier selling price in 2026

Color

Blue

Size

Size charts

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Trek Roscoe 8 Mulsanne Blue: the hardtail that loves going downhill

The Trek Roscoe 8 is an Alpha Gold aluminium trail hardtail with a 140 mm RockShox 35 Gold RL fork, a SRAM Eagle 1x12 drivetrain with an 11-50 cassette and big 29 x 2.60-inch Bontrager XR4 tyres set up tubeless, weighing 13.54 kg in size M. Offered here in XL, it is aimed at taller riders. Its Mulsanne Blue is a deep, glossy blue, understated and elegant.

Technical specifications

Frame	Alpha Gold aluminium, tapered head tube, internal cables, ISCG 05, threaded bottom bracket, Boost148 12 mm thru axle
Fork	RockShox 35 Gold RL, DebonAir spring, lockout, Boost110, 15 mm axle, 140 mm
Drivetrain	SRAM GX Eagle 1x12, X1 Eagle DUB 30T chainset, PG-1230 11-50 cassette
Brakes	Shimano hydraulic, MT4100 levers, MT420 4-piston callipers, 203 mm and 180 mm rotors
Wheels / tyres	Bontrager Rapid Drive 108 hubs, Bontrager Line Comp 30 rims / Bontrager XR4 Team Issue 29 x 2.60 in Tubeless Ready
Cockpit	Bontrager Rhythm Comp 780 mm handlebar, Bontrager Comp 50 mm stem
Saddle / seatpost	Bontrager Arvada / TranzX 150 mm dropper post
Weight	13.54 kg in size M (Trek figure, tubeless set-up)

At a glance

✓ 140 mm RockShox 35 Gold fork	✓ SRAM Eagle 1x12, 11-50 cassette
✓ 29 x 2.60 in tubeless tyres	✓ 4-piston brakes, 203 mm rotor
✓ 150 mm dropper post	✓ 13.54 kg in size M

Who is it for?

For the mountain biker who above all wants fun on the descents without the complexity or maintenance of a full-suspension bike, for the rider who wants to improve their skills on technical singletrack, or for a tall rider looking for a tough, playful bike for weekend rides. It also works as a second bike, easy to live with, alongside a full-suspension mountain bike.

The LVR workshop view

Alpha aluminium, Trek's expertise. The Roscoe 8 moves one step up the Alpha hierarchy with an Alpha Gold frame. It adopts the standards of a modern trail bike: a tapered head tube for a fork with large stanchions, Boost thru axles, ISCG 05 mounts for a chain guide and a threaded bottom bracket that does not creak. A frame that is not afraid of taking knocks.

	Alpha Silver (Marlin)	Alpha Gold (Roscoe 8)	Alpha Platinum (Farley 5)
Use	Beginners and all-round riding	Playful trail hardtail	Fat bike for all soft terrain
Standards	Quick-release axle, 135 mm wheel	Boost148, tapered head tube, ISCG 05	197 mm rear hub, carbon fork
Stock fork	100 mm	140 mm	Rigid
What it means	Simple and affordable	Handles hard riding	Floats on sand and snow

Put simply: the Roscoe 8 is not a more expensive Marlin, it is a different bike. Its 140 mm of travel, 2.60-inch tyres and 780 mm handlebar make it a playful descending hardtail, whereas the Marlin remains an all-round mountain bike.

The 2.60-inch tyres are the heart of this bike: run at low pressure tubeless, they squash over rocks and make up for some of the lack of a rear shock. In the rock gardens of the Caroux or on the slippery red earth of the Salagou, that extra grip makes all the difference. We set the pressure with you according to your weight, often noticeably lower than on a Marlin.

Shimano braking with 4-piston callipers and a 203 mm front rotor is built for long descents. The 150 mm dropper post lets you get your hips well back on steep sections, and the RockShox 35 air fork is adjusted by pressure: sag is set in the workshop in a few minutes when we hand the bike over.

Roscoe, Marlin or Farley: which should you choose?

Model	Fork	Drivetrain	Wheels / tyres	Weight (M)
Marlin 6	RockShox Judy, 100 mm	Shimano CUES 1x10 + dropper post	Tubeless Ready rims	15.00 kg
Marlin 7	RockShox Judy Silver air, 100 mm	SRAM NX Eagle 1x12 + dropper post	Maxxis Rekon Tubeless Ready	14.15 kg
Roscoe 8	RockShox 35 Gold, 140 mm	SRAM GX Eagle 1x12	29 x 2.60 in Tubeless Ready	13.54 kg
Farley 5	Rigid carbon	microSHIFT Advent X 1x10	27.5 x 4.50 in (fat)	16.20 kg

Our take: compared with the Marlin 6 and 7, the Roscoe 8 brings 40 mm more travel, wider tyres and much more powerful braking, while remaining the lightest of the four in size M at 13.54 kg.

LVR sizing advice

This page covers the Roscoe 8 in size XL, for riders from 1.88 to 1.95 m. The trail geometry tolerates a slightly large frame; too small, on the other hand, and it would feel twitchy.

Size	XL
Rider height (cm)	188-195
Inseam (cm)	89-91
Cranks (mm)	175
Handlebar / stem (mm)	780 / 50

Source: Trek size guide. Bike fitting available in our Béziers shop.

Your questions

A hardtail for enduro?	For playful descents, yes; for back-to-back very rough terrain, a full-suspension bike remains more comfortable.
What tyre pressure?	Much lower than a conventional tyre when run tubeless: we set it with you according to your weight.
Can a chain guide be fitted?	Yes, the frame has ISCG 05 mounts.
Is the blue paint fragile?	Adhesive protection on the down tube limits stone chips.

The LVR Cycles verdict

A generous trail hardtail, light and with strong brakes, that makes you want to seek out the most playful trails. Mulsanne Blue gives it a classic look that will age well.

Pros
+ 140 mm fork and 2.60 in tyres
+ 4-piston brakes, 203 mm rotor
+ 13.54 kg in size M

Cons
- Harsh at the rear on very rough ground
- Only offered in XL on this page

Why buy from LVR Cycles? In Béziers, we set your Roscoe up tubeless, adjust the fork and brakes and advise you on tyre pressure for the trails of the Haut-Languedoc.

Please note that the specifications may be changed without prior notice by the manufacturer, based on the availability of components and other factors.

Reference TRK-5260386

Data sheet