Trek Roscoe 8 Gen 4
Description
Tech Specs
| 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, 29x2.50'' |
| 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, Tubeless Ready, 28-hole, Presta valve |
| Rim Strip | Bontrager TLR |
| Skewer Rear | Bontrager Switch thru axle, removable lever |
| Shifter | Shimano Deore M6100, 12 speed |
| Rear Derailleur | Shimano Deore M6100, long cage |
| Crank | Shimano MT512, 30T ring, 55mm chainline, 170mm length |
| Bottom Bracket | Shimano BB-MT501 BSA |
| Cassette | Shimano Deore M6100, 10-51, 12 speed |
| Chain | Shimano Deore M6100, 12 speed |
| Brake | Shimano 4-piston hydraulic disc, M6100 lever, M6120 caliper // Shimano 4-piston hydraulic disc, M6100 lever, M6120 caliper |
| Brake Rotor | Shimano RT66, 6-bolt, 180mm // Shimano RT66, 6-bolt, 203mm |
| Saddle | Bontrager Verse P3, steel rails |
| Seatpost | TranzX JD-YSI34, 170mm travel, internal routing, 31.6mm, 500mm length |
| Seat Collar | Bolt-on, 36.4mm |
| Handlebar | Bontrager Comp, alloy, 31.8mm, 40mm rise, 780mm width |
| Stem | Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length |
| Headset | FSA Orbit, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom, 1.5 crown |
| Grips | Trek Line Comp, nylon lock-on |
Product Identifiers
| Brand | Trek |
| Type | Mountain Bike |
| SKU | 5341554 |
| UPC | 197216281016 |
| MPN | 5341554 |
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.
Geometry
| B B Drop | 6.1 |
| B B Height | 31.2 |
| Chainstay Length | 43 |
| Eff Seat Tube Angle | 75.0° |
| Eff Top Tube | 61.1 |
| Frame Reach | 44 |
| Frame Size Letter | M |
| Frame Size Number | 17.5" |
| Frame Stack | 64.4 |
| Head Angle | 65.0° |
| Head Tube Length | 10 |
| Offset | 4.4 |
| Seat Tube | 37.5 |
| Seat Tube Angle | 73.1° |
| Standover | 73.5 |
| Trail | 12.5 |
| Wheelbase | 118.6 |
| Wheel Size | 29" |