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 youre nailing jumps or picking through gnarly rock gardens.
- 29er wheels and wide 2.6" tires make for a grippy, confident, and fast-rolling ride
- Bigger, stiffer 36mm fork stanchions wont flex, so you can push harder with more precise, confident steering that helps you stay on your line
- The FOX forks air spring can easily be adjusted for a specific rider weight, and its lighter than a coil spring
- The dropper post lets you lower your saddle on the fly so its out of the way on descents
Ready to get rowdy
With 140mm front travel, trail-smashing 29-inch wheels, and dialed-for-dirt frame features, Roscoe is ready to get rowdy on your favorite rides.
![]()

Progressive trail geometry
A long reach, slack head angle, steep seat angle, and short chain stays combine for a ride thats confidence inspiring, yet still nimble and fun.
![]()

The strong quiet type
Roscoe stays well protected with a double-sided chainstay guard, tough downtube guard, and internal cable guides that help your ride stay quiet, even over rough trails.
![]()

Shimano XT
Shimano XT is the original mountain bike groupset and trusted by generations of mountain bikers around the world. Whatever the trail, wherever you ride, XT is your solution for mountain biking today. Reliable shifting. Superior braking. Intuitive maintenance. XT is the high performance workhorse you can count on.
![]()

You almost forgot your pedals
This bike doesn’t come with pedals because youll have a better ride if you choose your own. Explore the pedal guide to find the best pedals for your riding style. Reach for flat pedals for simple versatility or go for clipless MTB pedals if you want control & efficiency.
![]()

Frame |
Alpha Gold Aluminum, tapered head tube, internal derailleur & dropper post routing, ISCG 05, threaded BB, Boost148, 12mm thru axle |
Fork |
Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt axle, 140mm travel |
Wheel Front |
/ |
Tire |
Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29x2.60 |
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 MicroSpline freehub, Boost148, 12mm thru axle |
Rim |
Bontrager Line Comp 30, Tubeless Ready, 28-hole, Presta valve |
Rim Strip |
Bontrager TLR |
Skewer Rear |
Bontrager Switch thru axle, removable lever |
Shifter |
Shimano SLX M7100, 12 speed |
Rear Derailleur |
Shimano XT M8100, long cage |
Crank |
E*thirteen Helix, 30T steel ring, 73mm spindle length, 52mm chainline, 170mm length |
Bottom Bracket |
Shimano SM-BB52, 73mm, threaded external bearing |
Cassette |
Shimano SLX M7100, 10-51T, 12 speed |
Chain |
Shimano Deore M6100, 12 speed |
Brake |
Shimano M6120 4-piston hydraulic disc // Shimano 4-piston hydraulic disc, M6100 lever, M6120 caliper |
Brake Rotor |
Shimano RT66, 6-bolt, 180mm // Shimano RT66, 6-bolt, 203mm |
Saddle |
Bontrager Arvada, hollow chromoly rails, 138mm width |
Seatpost |
TranzX JD-YSP18, 100mm travel, internal routing, 31.6mm, 361mm length |
Seat Collar |
Bolt-on, 36.4mm |
Handlebar |
Bontrager Line, alloy, 35mm, 27.5mm rise, 750mm width |
Stem |
Bontrager Elite, 35mm, 0 degree, 35mm length |
Headset |
FSA IS-2, 1-1/8 top, 1.5 bottom |
Grips |
Bontrager XR Trail Comp, nylon lock-on |
Geometry Chart
B B Drop |
6.1 |
B B Height |
32.1 |
Chainstay Length |
43 |
Eff Seat Tube Angle |
74.7° |
Eff Top Tube |
58.6 |
Frame Reach |
41.5 |
Frame Size Letter |
S |
Frame Stack |
62.6 |
Head Angle |
65.0° |
Head Tube Length |
9 |
Offset |
4.2 |
Seat Tube |
36 |
Seat Tube Angle |
73.1° |
Standover |
74.1 |
Trail |
13.1 |
Wheelbase |
115.1 |
Wheel Size |
29" |
B B Drop |
6.1 |
B B Height |
32.1 |
Chainstay Length |
43 |
Eff Seat Tube Angle |
74.7° |
Eff Top Tube |
61.4 |
Frame Reach |
44 |
Frame Size Letter |
M |
Frame Stack |
63.5 |
Head Angle |
65.0° |
Head Tube Length |
10 |
Offset |
4.2 |
Seat Tube |
42 |
Seat Tube Angle |
73.1° |
Standover |
74.8 |
Trail |
13.1 |
Wheelbase |
118.1 |
Wheel Size |
29" |
B B Drop |
6.1 |
B B Height |
32.2 |
Chainstay Length |
43 |
Eff Seat Tube Angle |
74.7° |
Eff Top Tube |
63 |
Frame Reach |
45.5 |
Frame Size Letter |
ML |
Frame Stack |
63.9 |
Head Angle |
65.0° |
Head Tube Length |
10.5 |
Offset |
4.2 |
Seat Tube |
43.5 |
Seat Tube Angle |
73.1° |
Standover |
74.2 |
Trail |
13.1 |
Wheelbase |
119.8 |
Wheel Size |
29" |
B B Drop |
6.1 |
B B Height |
32.1 |
Chainstay Length |
43 |
Eff Seat Tube Angle |
74.7° |
Eff Top Tube |
64.6 |
Frame Reach |
47 |
Frame Size Letter |
L |
Frame Stack |
64.4 |
Head Angle |
65.0° |
Head Tube Length |
11 |
Offset |
4.2 |
Seat Tube |
45 |
Seat Tube Angle |
73.1° |
Standover |
75.5 |
Trail |
13.1 |
Wheelbase |
121.5 |
Wheel Size |
29" |
B B Drop |
6.1 |
B B Height |
32.2 |
Chainstay Length |
43 |
Eff Seat Tube Angle |
74.7° |
Eff Top Tube |
67.7 |
Frame Reach |
49.5 |
Frame Size Letter |
XL |
Frame Stack |
66.6 |
Head Angle |
65.0° |
Head Tube Length |
13.5 |
Offset |
4.2 |
Seat Tube |
50 |
Seat Tube Angle |
73.1° |
Standover |
76.5 |
Trail |
13.1 |
Wheelbase |
125 |
Wheel Size |
29" |