2025 Specialized Stumpjumper 15 Expert vs 2023 Specialized Stumpjumper EVO Comp Alloy
The S2 is the Specialized Stumpjumper EVO Comp Alloy size closest to your S2 Specialized Stumpjumper 15 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 Specialized Stumpjumper EVO Comp Alloy
Compared with the Specialized Stumpjumper 15 Expert in S2, the Specialized Stumpjumper EVO Comp Alloy in S2 places the top of the head tube at about the same height and 3 mm further forward, relative to the bottom bracket. Its wheelbase is 10 mm longer, which can contribute to stability at speed.
- Frame stack
- −1 mm
- About the same height
- Frame reach
- +3 mm
- Longer frame reach
- Wheelbase
- +10 mm
- Longer: steadier at speed
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- +6 mm
- Longer: more planted
The two frames
Specialized Stumpjumper 15 Expert, S2Specialized Stumpjumper EVO Comp Alloy, S2Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Stumpjumper 15 Expert S2 | Specialized Stumpjumper EVO Comp Alloy S2 | Difference |
|---|---|---|---|
| Reach | 425 | 428 | +3 mm |
| Stack | 618 | 617 | −1 mm |
| Head tube angle | 64.5 | 64.5 | ±0.0° |
| Seat tube angle | 77 | 77.6 | +0.6° |
| Effective top tube | 573 | not listed | |
| Chainstay length | 432 | 438mm | +6 mm |
| Wheelbase | 1181 | 1191mm | +10 mm |
| BB drop | 38 | 35mm | −3 mm |
| BB height | 337 | 340mm | +3 mm |
| Standover | 751 | not listed | |
| Seat tube length | not listed | 385 | |
| Fork length | not listed | not listed | |
| Head tube length | not listed | 95 |
Differences are the Specialized Stumpjumper EVO Comp Alloy minus the Specialized Stumpjumper 15 Expert. Full charts: 2025 Specialized Stumpjumper 15 Expert, 2023 Specialized Stumpjumper EVO Comp Alloy.
Where each sits in its class
Specialized Stumpjumper 15 ExpertSpecialized Stumpjumper EVO Comp Alloy
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 Stumpjumper 15 ExpertExpert | Specialized Stumpjumper EVO Comp AlloyComp Alloy |
|---|---|---|
| Frame | Specialized FACT 11m | Specialized Stumpjumper EVO |
| Fork | Fox 36 Performance Elite | Fox FLOAT 36 Rhythm |
| Rear shock | Fox Float Performance Elite | Fox Float |
| Shifter | SRAM Pod Controller | SRAM GX |
| Derailleur | SRAM GX Eagle | SRAM GX Eagle |
| Cassette | SRAM GX Eagle Transmission | SRAM GX Eagle |
| Chain | SRAM GX Eagle | SRAM NX Eagle |
| Crankset | SRAM GX Eagle | SRAM X1 Eagle |
| Chainring | SRAM GX Eagle | Chainring |
| Bottom bracket | SRAM DUB | SRAM DUB |
| Wheelset | Specialized Roval Traverse | Specialized 29 Disc |
| Tire | Specialized Butcher, Specialized Eliminator | Specialized Butcher, Specialized Eliminator |
| Hub | DT Swiss 370 | not listed |
| Rim | Roval Traverse | not listed |
| Brake | SRAM Maven Bronze | SRAM Code RS |
| Rotor | SRAM HS2, SRAM Maven | not listed |
| Handlebar | Specialized 6000 | Specialized alloy |
| Stem | Specialized Trail | Specialized Alloy |
| Grips | Deity Lockjaw | not listed |
| Headset | Specialized Integrated | FSA |
| Dropper post | PNW Loam | X-Fusion Manic |
| Saddle | Specialized Bridge | Specialized Bridge |
| Seatpost | not listed | X-Fusion Manic |
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