2025 Specialized Rockhopper Expert vs 2024 Moots Mountaineer SL
The S is the Moots Mountaineer SL size closest to your S - 27.5 Specialized Rockhopper Expert. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Moots Mountaineer SL
Compared with the Specialized Rockhopper Expert in S - 27.5, the Moots Mountaineer SL in S places the top of the head tube 39 mm higher and 21 mm further forward, relative to the bottom bracket.
- Frame stack
- +39 mm
- Higher front end
- Frame reach
- +21 mm
- Longer frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Only the Specialized Rockhopper Expert is drawn. The Moots Mountaineer SL numbers we have for size S are missing the wheelbase.
Geometry side by side
| Measurement | Specialized Rockhopper Expert S - 27.5 | Moots Mountaineer SL S | Difference |
|---|---|---|---|
| Reach | 395mm | 416 | +21 mm |
| Stack | 573mm | 612 | +39 mm |
| Head tube angle | 68° | 68 | ±0.0° |
| Seat tube angle | 73.5° | 75 | +1.5° |
| Effective top tube | 565 | not listed | |
| Chainstay length | 440mm | 445 | +5 mm |
| Wheelbase | 1092mm | not listed | |
| BB drop | 43 | 54 | +11 mm |
| BB height | 310 | 320 | +10 mm |
| Standover | not listed | 782 | |
| Seat tube length | not listed | 470 | |
| Fork length | 485mm | not listed | |
| Head tube length | 100mm | 100 | ±0 mm |
Differences are the Moots Mountaineer SL minus the Specialized Rockhopper Expert. Full charts: 2025 Specialized Rockhopper Expert, 2024 Moots Mountaineer SL.
Where each sits in its class
Specialized Rockhopper ExpertMoots Mountaineer SL
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 ExpertExpert | Moots Mountaineer SLXX SL |
|---|---|---|
| Frame | Specialized A1 | not listed |
| Fork | RockShox Judy | RockShox Pike Ultimate |
| Shifter | SRAM SX Eagle | not listed |
| Derailleur | SRAM NX Eagle | not listed |
| Cassette | SRAM SX Eagle | not listed |
| Chain | SRAM SX Eagle | not listed |
| Crankset | Specialized Stylo | not listed |
| Chainring | SRAM Stylo | Max Chain Ring |
| Pedals | Specialized Fitness | not listed |
| Wheelset | Formula Stout | ENVE M630 |
| Tire | Specialized Ground Control 2BR | not listed |
| Hub | Formula DC20, Formula DC22 | not listed |
| Rim | Specialized hookless | not listed |
| Brake | Shimano MT200 | Disc |
| Rotor | Shimano rear | not listed |
| Handlebar | Specialized alloy | ENVE M6 |
| Stem | Specialized Stout | ENVE M6 |
| Grips | Specialized Trail | not listed |
| Seatpost | Specialized Alloy | not listed |
| Saddle | Specialized Bridge Sport | not listed |
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