Roscoe 9 is our best all-mountain alloy hardtail, built for lap after lap of grin-inducing fun. A 140mm FOX Rhythm 36 fork, powerful 4-piston brakes, and a fast-and-grippy wheel and tire combo deliver awesome capability whether you're nailing jumps or picking through gnarly rock gardens.
It's right for you if...
You love the serious fun and connected feel a hardtail brings to the trail, and you want one that’s spec’d with top-notch parts that love rough and tumble runs as much as you do.
The tech you get
A lightweight aluminum frame, a 140mm FOX Rhythm fork with beefy 36mm stanchions, a Shimano SLX/XT 1x12 drivetrain with a wide range of gears for climbing, powerful 4-piston brakes, and a dropper post for room to move around on the bike on descents, corners, and jumps. Plus, fast-rolling 29er wheels and wide, grippy 2.6" tires.
The final word
Rip laps, catch air, and crush techy descents on our best hardtail. Of all the rad parts on this bike, the FOX Rhythm 36 fork is the best upgrade—it’s capable of soaking up even the roughest lines.
Why you'll love it
- 29er wheels and wide 2.6" tires make for a grippy, confident, and fast-rolling ride
- Bigger, stiffer 36mm fork stanchions won't flex, so you can push harder with more precise, confident steering that helps you stay on your line
- The FOX fork's air spring can easily be adjusted for a specific rider weight, and it's lighter than a coil spring
- The dropper post lets you lower your saddle on the fly so it's out of the way on descents
Specifications
*spec applies to all sizes unless otherwise noted
| Frame | Alpha Gold Aluminum, tapered head tube, internal derailleur & dropper post routing, ISCG 05, threaded BB, Boost148 |
|---|---|
| Fork | Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 140 mm travel |
| Max compatible fork travel | 150mm |
| Hub front | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle |
|---|---|
| Hub rear | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano MicroSpline freehub, Boost148, 12 mm thru axle |
| Skewer rear | Bontrager Switch thru-axle, removable lever |
| Rim | Bontrager Line Comp 30, Tubeless Ready, 28-hole, Presta valve |
| Tire | Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29x2.60" |
| Tire part | Bontrager TLR sealant, 180 ml/6 oz |
| Rim strip | Bontrager TLR |
| Max tire size | Frame: 29x2.60" (XS - 27.5x2.60") Fork: see manufacturer |
| Shifter | Shimano SLX M7100, 12-speed |
|---|---|
| Rear derailleur | Shimano XT M8100, long cage, 51T max cog |
| *Crank | Size: S, M, M/L, L E*thirteen Helix, 30T steel ring, 73 mm spindle length, 52 mm chainline, 170 mm length |
| Size: XL E*thirteen Helix, 30T steel ring, 73 mm spindle length, 52 mm chainline, 175 mm length |
|
| Bottom bracket | Shimano SM-BB52, 73mm, threaded external bearing |
| Cassette | Shimano SLX M7100, 10-51, 12 speed |
| Chain | Shimano Deore M6100, 12-speed |
| Max chainring size | 52mm chainline: 32T, 55mm chainline: 34T |
| Saddle | Bontrager Arvada, hollow chromoly rails, 138 mm width |
|---|---|
| *Seatpost | Size: S TranzX JD-YSP18, 100 mm travel, internal routing, 31.6 mm, 361 mm length |
| Size: M TranzX JD-YSP18, 130mm travel, internal routing, 31.6 mm, 425 mm length |
|
| Size: M/L, L, XL TranzX JD-YSP18, 150 mm travel, internal routing, 31.6 mm, 445 mm length |
|
| *Handlebar | Size: S Bontrager Line, alloy, 35 mm, 27.5 mm rise, 750 mm width |
| Size: M, M/L, L, XL Bontrager Line, alloy, 35 mm, 27.5 mm rise, 780 mm width |
|
| Grips | Bontrager XR Trail Comp, nylon lock-on |
| *Stem | Size: S Bontrager Elite, 35 mm, 0-degree, 35 mm length |
| Size: M, M/L, L, XL Bontrager Elite, 35 mm, 0-degree, 45 mm length |
|
| Headset | FSA IS-2, 1-1/8'' top, 1.5'' bottom |
| Brake | Shimano M6120 4-piston hydraulic disc |
| *Brake rotor | Size: S, M, M/L, L, XL Shimano RT66, 6-bolt, 180mm |
| Size: S, M, M/L, L, XL Shimano RT66, 6-bolt, 203 mm |
| Weight | M - 13.13 kg / 28.95 lbs (with TLR sealant, no tubes) |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg). |
Sizing & Tech
The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local retailer. Frame Geometry & Size Chart