2026 Specialized Rockhopper Base vs 2026 Trek Supercaliber SLR 9.9
We can't match sizes for these two: one of them has no stack and reach for the sizes shown.
What changes on the Trek Supercaliber SLR 9.9
- Frame stack
- n/a
- One of the bikes has no number for this
- Frame reach
- +40 mm
- Longer frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- −5 mm
- Shorter: livelier
The two frames
We can't draw these frames yet. The Specialized Rockhopper Base numbers we have for size L are missing the stack and wheelbase. The numbers below still compare.
Geometry side by side
| Measurement | Specialized Rockhopper Base L | Trek Supercaliber SLR 9.9 L | Difference |
|---|---|---|---|
| Reach | 425 | 465 | +40 mm |
| Head tube angle | 68.5 | 67.5 | −1.0° |
| Seat tube angle | 73.5 | 74.5 | +1.0° |
| Chainstay length | 440 | 435 | −5 mm |
| Stack | not listed | 599 | |
| Effective top tube | not listed | 622 | |
| Wheelbase | not listed | 1172 | |
| BB drop | not listed | 46 | |
| BB height | not listed | 328 | |
| Standover | not listed | 772 | |
| Seat tube length | not listed | 460 | |
| Head tube length | not listed | 100 |
Differences are the Trek Supercaliber SLR 9.9 minus the Specialized Rockhopper Base. Full charts: 2026 Specialized Rockhopper Base, 2026 Trek Supercaliber SLR 9.9.
Where each sits in its class
Specialized Rockhopper BaseTrek Supercaliber SLR 9.9
Each bike is ranked against the other trail bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Specialized Rockhopper BaseBase | Trek Supercaliber SLR 9.9SLR 9.9 X0 AXS |
|---|---|---|
| Frame | Specialized A1 premium butted | Trek Supercaliber |
| Fork | SR Suntour XCE | RockShox SID Ultimate |
| Shifter | Shimano RapidFire Plus Altus | SRAM Pod Controller Ultimate |
| Derailleur | Shimano Altus | SRAM X0 Eagle AXS |
| Cassette | SunRace cassette | SRAM X0 Eagle Transmission |
| Chain | KMC X9EPT | SRAM X0 Eagle |
| Crankset | 2x Forged Alloy | SRAM X0 Eagle Transmission |
| Bottom bracket | Specialized Powerspline | SRAM DUB |
| Pedals | Specialized platform | not listed |
| Wheelset | Specialized Alloy Double-Wall | Bontrager Kovee Pro 30 |
| Tire | Specialized Ground Control 2BR | Bontrager Sainte-Anne RSL XR |
| Brake | Tektro HD-M280 | SRAM Level Silver |
| Handlebar | Specialized Mini Rise | Bontrager RSL Integrated |
| Stem | 3D-Forged Alloy | Bontrager RSL Integrated |
| Grips | Specialized Trail | ESI Chunky |
| Seatpost | Specialized Alloy Seatpost | not listed |
| Saddle | Specialized Bridge Sport | Bontrager Aeolus |
| Rear shock | not listed | RockShox SIDLuxe |
| Chainring | not listed | SRAM X0 Eagle |
| Battery | not listed | SRAM eTap |
| Rotor | not listed | SRAM HS2 |
| Headset | not listed | FSA IS2 |
| Dropper post | not listed | RockShox Reverb |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
