2018 Specialized Stumpjumper ST Women's Alloy 27.5 vs 2020 Specialized Stumpjumper 27.5
The M is the Specialized Stumpjumper 27.5 size closest to your M Specialized Stumpjumper ST Women's Alloy 27.5. 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 27.5
Compared with the Specialized Stumpjumper ST Women's Alloy 27.5 in M, the Specialized Stumpjumper 27.5 in M places the top of the head tube 6 mm higher and 9 mm further back, relative to the bottom bracket. Its wheelbase is 9 mm longer, which can contribute to stability at speed.
- Frame stack
- +6 mm
- Higher front end
- Frame reach
- −9 mm
- Shorter frame reach
- Wheelbase
- +9 mm
- Longer: steadier at speed
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Stumpjumper ST Women's Alloy 27.5, MSpecialized Stumpjumper 27.5, MDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Stumpjumper ST Women's Alloy 27.5 M | Specialized Stumpjumper 27.5 M | Difference |
|---|---|---|---|
| Reach | 444mm | 435mm | −9 mm |
| Stack | 590mm | 596mm | +6 mm |
| Head tube angle | 66.5° | 65.5° | −1.0° |
| Seat tube angle | 76° | 75° | −1.0° |
| Effective top tube | 591mm | not listed | |
| Chainstay length | 432mm | 432mm | ±0 mm |
| Wheelbase | 1170mm | 1179mm | +9 mm |
| BB drop | 28mm | 21mm | −7 mm |
| BB height | 325mm | 336mm | +11 mm |
| Standover | 749mm | 743mm | −6 mm |
| Seat tube length | 410mm | 410mm | ±0 mm |
| Fork length | 522mm | 542mm | +20 mm |
| Head tube length | 110mm | 110mm | ±0 mm |
Differences are the Specialized Stumpjumper 27.5 minus the Specialized Stumpjumper ST Women's Alloy 27.5. Full charts: 2018 Specialized Stumpjumper ST Women's Alloy 27.5, 2020 Specialized Stumpjumper 27.5.
Where each sits in its class
Specialized Stumpjumper ST Women's Alloy 27.5Specialized Stumpjumper 27.5
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 ST Women's Alloy 27.5Women's Alloy 27.5 | Specialized Stumpjumper 27.5S-Works 27.5 |
|---|---|---|
| Fork | RockShox Recon RL | Fox FLOAT Rhythm |
| Rear shock | X-Fusion Pro RL | Fox FLOAT DPX2 Factory |
| Shifter | Shimano SLX | Shimano XTR M9100 |
| Derailleur | Shimano SLX | Shimano XTR M9100 |
| Chain | KMC X-11 | Shimano XTR M9100 |
| Crankset | SRAM NX Power | Race Face Next |
| Bottom bracket | SRAM Power | not listed |
| Tire | Specialized Butcher, Specialized Purgatory | Specialized Butcher, Specialized Eliminator |
| Brake | Tektro Gemini Comp | Shimano XTR M9120 |
| Grips | Specialized Sip Grip | Specialized Deity |
| Saddle | Specialized Myth Sport | Specialized Myth 155 |
| Cassette | not listed | Shimano XTR M9100 |
| Wheelset | not listed | Roval Traverse SL |
| Stem | not listed | Specialized Deity |
| Seatpost | not listed | Fox Transfer |
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