Roscoe 8 XL Lava

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 Fox Rhythm 36 fork (150mm travel) to soak up rough and chunky trail debris. It delivers plenty of gears for punchy climbs, thanks to a 12-speed Shimano Deore drivetrain, and stop-on-a-dime braking power from 4-piston Shimano M6100 hydraulic disc brakes.

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.

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, 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, 200mm travel, internal routing, 31.6mm, 565mm 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

Geometry Chart

B B Drop	6.1
B B Height	31.2
Chainstay Length	43
Eff Seat Tube Angle	77.0°
Eff Top Tube	65.5
Frame Reach	50
Frame Size Letter	XL
Frame Size Number	21.5"
Frame Stack	68.4
Head Angle	65.0°
Head Tube Length	14.5
Offset	4.4
Seat Tube	45
Seat Tube Angle	75.1°
Standover	74
Trail	12.5
Wheelbase	126.5
Wheel Size	29"