2026 Trek Supercaliber SLR 9.9 vs 2026 Specialized Rockhopper Base
We can't match sizes for these two: one of them has no stack and reach for the sizes shown.
What changes on the Specialized Rockhopper Base
- Frame stack
- n/a
- One of the bikes has no number for this
- Frame reach
- −10 mm
- Shorter frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- +1.0°
- Steeper: sharper steering
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Only the Trek Supercaliber SLR 9.9 is drawn. The Specialized Rockhopper Base numbers we have for size L are missing the stack and wheelbase.
Geometry side by side
| Measurement | Trek Supercaliber SLR 9.9 M | Specialized Rockhopper Base L | Difference |
|---|---|---|---|
| Reach | 435 | 425 | −10 mm |
| Stack | 590 | not listed | |
| Head tube angle | 67.5 | 68.5 | +1.0° |
| Seat tube angle | 74.5 | 73.5 | −1.0° |
| Effective top tube | 592 | not listed | |
| Chainstay length | 435 | 440 | +5 mm |
| Wheelbase | 1138 | not listed | |
| BB drop | not listed | not listed | |
| BB height | 328 | not listed | |
| Standover | 772 | not listed | |
| Seat tube length | 420 | not listed | |
| Head tube length | 90 | not listed |
Differences are the Specialized Rockhopper Base minus the Trek Supercaliber SLR 9.9. Full charts: 2026 Trek Supercaliber SLR 9.9, 2026 Specialized Rockhopper Base.
Where each sits in its class
Trek Supercaliber SLR 9.9Specialized Rockhopper Base
AggressivePositionUpright
CalmSteeringQuick
PlayfulBalancePlanted
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 | Trek Supercaliber SLR 9.9SLR 9.9 X0 AXS | Specialized Rockhopper BaseBase |
|---|---|---|
| Frame | Trek Supercaliber | Specialized A1 premium butted |
| Fork | RockShox SID Ultimate | SR Suntour XCE |
| Rear shock | RockShox SIDLuxe | not listed |
| Shifter | SRAM Pod Controller Ultimate | Shimano RapidFire Plus Altus |
| Derailleur | SRAM X0 Eagle AXS | Shimano Altus |
| Cassette | SRAM X0 Eagle Transmission | SunRace cassette |
| Chain | SRAM X0 Eagle | KMC X9EPT |
| Crankset | SRAM X0 Eagle Transmission | 2x Forged Alloy |
| Chainring | SRAM X0 Eagle | not listed |
| Bottom bracket | SRAM DUB | Specialized Powerspline |
| Battery | SRAM eTap | not listed |
| Wheelset | Bontrager Kovee Pro 30 | Specialized Alloy Double-Wall |
| Tire | Bontrager Sainte-Anne RSL XR | Specialized Ground Control 2BR |
| Brake | SRAM Level Silver | Tektro HD-M280 |
| Rotor | SRAM HS2 | not listed |
| Handlebar | Bontrager RSL Integrated | Specialized Mini Rise |
| Stem | Bontrager RSL Integrated | 3D-Forged Alloy |
| Grips | ESI Chunky | Specialized Trail |
| Headset | FSA IS2 | not listed |
| Dropper post | RockShox Reverb | not listed |
| Saddle | Bontrager Aeolus | Specialized Bridge Sport |
| Pedals | not listed | Specialized platform |
| Seatpost | not listed | Specialized Alloy Seatpost |
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