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Trek Roscoe 8

Trek Roscoe 8
  • Color: Matte Black Olive
  • Color: Mulsanne Blue
Wheel Size:
Please select options
This item is available for purchase in-store or over the phone with in-store or curb side pick up at our retail stores. Please call during store hours for more information or visit us in-store.


Roscoe 8 is a trail hardtail for anyone looking to have some serious fun out in the dirt. It's a laid-back trail mountain bike dressed in a high-quality spec that's ready to party.

With 29er wheels, wide grippy 2.6" tires, and big suspension 140mm RockShox 35 Gold fork it's a blast on every trail from packed singletrack to the loose stuff.

Roscoe 8 features a lightweight aluminum frame, a SRAM NX Eagle 1x12 drivetrain with a wide range of gears for climbing, powerful 4-piston brakes, and a dropper post for room to get low on descents, corners, and jumps. The fast-rolling 29er wheels are built with 108-tooth Rapid Drive hub for instant engagement.

What you get over Roscoe 7:

- RockShox 35 Gold RL fork
- SRAM NX/GX/X1 Eagle drivetrain
- Powerful Shimano MT4100 lever, MT420 caliper 4-piston hydraulic brakes

Looking for Trek's best alloy hardtail? Level up with Roscoe 9 for with an upgraded FOX Rhythm fork with bigger beefy 36mm stanchions so you can push harder with more precise, confident steering that helps you stay on your line.

Wheel size:
- Sizes X-Small – Small: 27.5-inch
- Sizes Medium – X-Large: 29-inch

Due to supply-chain issues, Specs are subject to change without notice.

bike frame with labeled dimensions
Bike Sizes:
A. Reach 39cm 41.5cm 44cm 45.5cm 47cm 49.5cm
B. Stack 59.1cm 62.6cm 63.5cm 63.9cm 64.4cm 66.6cm
C. Standover 72.9cm 74.1cm 74.8cm 74.2cm 75.5cm 76.5cm
D. Effective Top Tube 55.2cm 58.6cm 61.4cm 63cm 64.6cm 67.7cm
E. Head Tube Angle 65.0° 65.0° 65.0° 65.0° 65.0° 65.0°
F. Head Tube Length 9cm 9cm 10cm 10.5cm 11cm 13.5cm
G. Seat Tube Angle 73.1° 73.1° 73.1° 73.1° 73.1° 73.1°
H. Seat Tube Length 34cm 36cm 42cm 43.5cm 45cm 50cm
I. Bottom Bracket Height 31.85cm 32.15cm 32.15cm 32.15cm 32.15cm 32.15cm
J. Bottom Bracket Drop 4.5cm 6.1cm 6.1cm 6.1cm 6.1cm 6.1cm
K. Fork Rake/Offset 4.2cm 4.2cm 4.2cm 4.2cm 4.2cm 4.2cm
L. Trail 12.2cm 13.1cm 13.1cm 13.1cm 13.1cm 13.1cm
M. Wheelbase 112cm 115.1cm 118.1cm 119.8cm 121.5cm 125cm
O. Chainstay Length 43cm 43cm 43cm 43cm 43cm 43cm
Effective Seat Tube Angle 74.7°cm 74.7°cm 74.7°cm 74.7°cm 74.7°cm 74.7°cm
Wheelsize 27.5" 29" 29" 29" 29" 29"

Trek Roscoe 7, 8, and 9 models come tubeless out of the box. Sealant, valves, and rim stips included. 

Ditching the tubes and going tubeless will help you get the most performance out of your tires. There are no tubes to pinch, so you can run lower pressures for better traction, and you get more control and a smoother, faster ride. As an added bonus, a tubeless setup can help seal punctures before they become flats.


Frame Alpha Gold Aluminum, tapered head tube, internal derailleur & dropper post routing, ISCG 05, threaded BB, Boost148
Fork RockShox 35 Gold RL, DebonAir spring, Motion Control damper, lockout, tapered steerer, Boost110, Maxle Stealth, 140mm travel
Size XS: 37mm offset
Size S, M, M/L, L, XL: 42mm offset
Rims Bontrager Line 30, Tubeless Ready, 28-hole, presta valve
Hubs Front: Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru axle
Rear: Bontrager alloy, sealed bearing, 6-bolt, Rapid Drive 108, Shimano 10 freehub, Boost148, 12mm thru axle, removable lever
Spokes 14g stainless steel
Axles Front: 15x110mm
Rear: 12x148mm
Tires Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi
Size XS: 27.5x2.60''
Sizes S, M, M/L, L, XL: 29x2.60''
Bottom Bracket SRAM DUB, 73mm, BSA threaded
Crankset SRAM X1 Eagle, DUB, 30T steel ring, Boost (52mm chainline)
Sizes XS, S, M, M/L, L: 170mm length
Size XL: 175mm length
Shifters SRAM NX Eagle, 12 speed
Rear Derailleur SRAM GX Eagle
Cassette/Freewheel SRAM PG-1230 Eagle, 11-50, 12 speed
Chain SRAM NX Eagle, 12 speed
Brakes Shimano 4-piston hydraulic disc, MT4100 lever, MT420 caliper
Rotors Shimano RT66, 6-bolt
Handlebars Sizes XS, S: Bontrager alloy, 31.8mm, 15mm rise, 750mm width
Sizes M, M/L, L, XL: Bontrager Rhythm Comp, alloy, 31.8mm, 15mm rise, 780mm width
Stem Bontrager alloy, 31.8mm, Blendr compatible, 7 degree
Sizes XS, S: 35mm length
Sizes M, M/L, L, XL: 50mm length
Headset FSA IS-2, 1-1/8'' top, 1.5'' bottom
Seatpost TranzX JD-YSP18, internal routing, 31.6mm
Size XS, S: 100mm travel, 361mm length
Size M: 130mm travel, 425mm length
Size M/L, L, XL: 150mm travel, 445mm length
Saddle Bontrager Arvada, steel rails, 138mm width
Pedals VP-536 nylon platform
Accessories & Extras Bontrager TLR sealant, 6oz, Bontrager TLR valve, 50mm
Weight M - 13.54 kg / 29.86 lbs (with TLR sealant, no tubes)

* Subject to change without notice.


Part Numbers

Option UPC MPN Store SKU
Matte Black Olive / Small / 29-inch 601842587546 5260376 BIK451598932
Matte Black Olive / Medium / 29-inch 601842587539 5260377 BIK452949512
Matte Black Olive / Medium/Large / 29-inch 601842587522 5260378 BIK45615452
Matte Black Olive / Large / 29-inch 601842587515 5260379 BIK454066772
Matte Black Olive / X-Large / 29-inch 601842587508 5260380 BIK458561812
Mulsanne Blue / Small / 29-inch 601842587485 5260382 BIK426802982
Mulsanne Blue / Medium/Large / 29-inch 601842587461 5260384 BIK423370392
Mulsanne Blue / X-Large / 29-inch 601842587447 5260386 BIK421839332