Frame & Fork
The Rockhopper features an aluminum frame with rear rack mounts on the inside of the seat stays. It is compatible with the Elite and Roll racks, and is also compatible with a center-mount kickstand.
Certain sizes are specific to particular wheel size(s) as shown below:
| Height (in) | Height (cm) | Bike size | Wheel size |
|---|---|---|---|
| 4'3" – 4'9" | 129 – 145 | XXS | 26 |
| 4'8" – 5'1" | 142 – 156 | XS | 27.5 |
| 5'0" – 5'5" | 152 – 165 | S | 27.5 or 29 |
| 5'4" – 5'10" | 162 – 178 | M | 27.5 or 29 |
| 5'9" – 6'1" | 175 – 185 | L | 29 |
| 6'0" – 6'5" | 183 – 198 | XL | 29 |
| 6'4" – 6'9" | 193 – 206 | XXL | 29 |
Cable Routing
Internally routed shift and brake cables for all models. After market dropper posts should also be internally routed for 2021 and later Rockhopper models.
Headset
The headset uses 1 1/8" Zero Stack 44 bearings.
Seatpost
30.9 diameter seatpost with 34.9 seat clamp
Fork
100mm maximum travel, straight steer tube
Axle Standards
Quick release rear axle with 135mm spacing