Trek Roscoe 8 Gen 4

By Trek
$2,399.99
SKU: 5354397 // Barcode: 197216472162
Roscoe 8 is a rowdy hardtail built to hunt for side hits and dive into the steep stuff. Its Alpha Platinum Aluminum frame pairs with a 150mm Fox Rhythm 36 fork to soak up rough, chunky terrain. A Shimano Deore M6200 12-speed drivetrain gives you the range you need for punchy climbs, while Shimano MT620 4-piston hydraulic disc brakes deliver powerful, consistent stopping when things get steep.

Ready to get rowdy

With 150mm front travel, trail-smashing 29-inch wheels, and dialed-for-dirt frame features, Roscoe is ready to get rowdy on your favorite rides.

Rock Solid

The bolt on downtube guard will stay put even after ripping though a chucky trail, keeping your bike quiet and protected.

Integrated storage

The frame bag is made from a recycled ripstop polyester with an eco friendly DWR coating on the outside that is water resistant, with plenty of room to stash everything from snacks to safety supplies.

Integrated storage

The frame bag is made from a recycled ripstop polyester with an eco friendly DWR coating on the outside that is water resistant, with plenty of room to stash everything from snacks to safety supplies.

Progressive trail geometry

A long reach, slack head angle, steep seat angle, and short chain stays combine for a ride that's confidence inspiring, yet still nimble and fun.

A better way to produce aluminum

Starting in 2024, we began removing high-emission aluminum from our manufacturing and replacing it with low-emission aluminum made with renewable energy. By October 2025, nearly every alloy bike we make - this one included - had made the switch, driving a major drop in our footprint.


Frame Alpha Platinum Aluminum, tapered head tube, ZS headset, internal derailleur & dropper post routing, ISCG 05, threaded BB, UDH, 148x12mm thru axle
Fork Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt X axle, 150mm travel
Tire Bontrager Brevard Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 27.5x2.50''
Tire Part Bontrager TLR sealant, 6oz
Hub Front Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru axle
Hub Rear Bontrager alloy, sealed bearing, 6-bolt, Rapid Drive 108, Shimano freehub, Boost148, 12mm thru axle
Rim Bontrager Line TLR 30, 27.5'' Tubeless Ready, 28-hole, Presta valve
Rim Strip Bontrager TLR
Spokes 14g stainless steel, black
Skewer Rear Bontrager Switch thru axle
Shifter Shimano Deore M6200
Rear Derailleur Shimano Deore M6200, long cage
Crank Shimano MT520, 30T ring, 55mm chainline, 170mm length
Bottom Bracket Shimano BB-MT501 BSA
Cassette Shimano M6200, 10-51, 12 speed
Chain Shimano Deore M6100, 12 speed
Brake Shimano MT620 hydraulic disc // Shimano MT620 hydraulic disc
Brake Rotor Shimano RT66, 6-bolt, 180mm // Shimano RT66, 6-bolt, 203mm
Pedal nylon platform
Saddle Bontrager Verse P3, steel rails
Seatpost TranzX JD-YSI34, 150mm travel, internal routing, 31.6mm, 456mm length
Seat Collar Bolt-on, 36.4mm
Handlebar Bontrager alloy, 31.8mm, 15mm rise, 750mm width
Stem Bontrager Comp, 31.8mm, 7 degree, 35mm length
Headset FSA Orbit, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom, 1.5 crown
Grips Trek Line Comp, nylon lock-on

Geometry Chart

B B Drop 4.5
B B Height 31.1
Chainstay Length 42.5
Eff Seat Tube Angle 75.0°
Eff Top Tube 57.5
Frame Reach 41.5
Frame Size Letter S
Frame Size Number 15.5"
Frame Stack 60.4
Head Angle 65.0°
Head Tube Length 9
Offset 3.7
Seat Tube 33
Seat Tube Angle 73.1°
Standover 71.4
Trail 12.5
Wheelbase 113.9
Wheel Size 27.5"