2020 Specialized Stumpjumper SRAM 29 vs 2020 Specialized Stumpjumper ST Alloy 29
The M is the Specialized Stumpjumper ST Alloy 29 size closest to your M Specialized Stumpjumper SRAM 29. 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 ST Alloy 29
Compared with the Specialized Stumpjumper SRAM 29 in M, the Specialized Stumpjumper ST Alloy 29 in M places the top of the head tube 5 mm higher and about as far forward, relative to the bottom bracket.
- Frame stack
- +5 mm
- Higher front end
- Frame reach
- ±0 mm
- About the same reach
- Wheelbase
- +2 mm
- About the same
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Stumpjumper SRAM 29, MSpecialized Stumpjumper ST Alloy 29, MDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Stumpjumper SRAM 29 M | Specialized Stumpjumper ST Alloy 29 M | Difference |
|---|---|---|---|
| Reach | 425mm | 425mm | ±0 mm |
| Stack | 614mm | 619mm | +5 mm |
| Head tube angle | 66.5° | 66.5° | ±0.0° |
| Seat tube angle | 74.5° | 74.5° | ±0.0° |
| Chainstay length | 437mm | 437mm | ±0 mm |
| Wheelbase | 1169mm | 1171mm | +2 mm |
| BB drop | 33mm | 33mm | ±0 mm |
| BB height | 342mm | 341mm | −1 mm |
| Standover | 750mm | 762mm | +12 mm |
| Seat tube length | 410mm | 410mm | ±0 mm |
| Fork length | 560mm | 560mm | ±0 mm |
| Head tube length | 95mm | 100mm | +5 mm |
Differences are the Specialized Stumpjumper ST Alloy 29 minus the Specialized Stumpjumper SRAM 29. Full charts: 2020 Specialized Stumpjumper SRAM 29, 2020 Specialized Stumpjumper ST Alloy 29.
Where each sits in its class
Specialized Stumpjumper SRAM 29Specialized Stumpjumper ST Alloy 29
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 SRAM 29S-Works SRAM AXS 29 | Specialized Stumpjumper ST Alloy 29 |
|---|---|---|
| Fork | RockShox Pike Ultimate | not listed |
| Rear shock | RockShox Super Deluxe Ultimate | not listed |
| Shifter | SRAM AXS Eagle Controller | not listed |
| Derailleur | SRAM XX1 Eagle AXS | not listed |
| Cassette | SRAM XX1 Eagle | not listed |
| Chain | SRAM XX1 Eagle | not listed |
| Crankset | SRAM X01 Eagle | not listed |
| Bottom bracket | SRAM DUB | not listed |
| Wheelset | Roval Traverse SL | not listed |
| Tire | Specialized Butcher, Specialized Eliminator | not listed |
| Brake | SRAM Code RSC | not listed |
| Stem | Specialized Deity | not listed |
| Grips | Specialized Deity | not listed |
| Seatpost | RockShox Reverb AXS | not listed |
| Saddle | Specialized Myth 155 | not listed |
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