2017 Specialized Stumpjumper FSR 650b Frameset vs 2018 Specialized Stumpjumper 27.5 Frameset
The Specialized Stumpjumper 27.5 Frameset size closest to your M is the M. Compare the M instead
What changes on the Specialized Stumpjumper 27.5 Frameset
Compared with the Specialized Stumpjumper FSR 650b Frameset in M, the Specialized Stumpjumper 27.5 Frameset in XL places the top of the head tube 18 mm higher and 50 mm further forward, relative to the bottom bracket. Its wheelbase is 58 mm longer, which can contribute to stability at speed.
- Frame stack
- +18 mm
- Higher front end
- Frame reach
- +50 mm
- Longer frame reach
- Wheelbase
- +58 mm
- Longer: steadier at speed
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Stumpjumper FSR 650b Frameset, MSpecialized Stumpjumper 27.5 Frameset, XLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Stumpjumper FSR 650b Frameset M | Specialized Stumpjumper 27.5 Frameset XL | Difference |
|---|---|---|---|
| Reach | 414mm | 464mm | +50 mm |
| Stack | 599mm | 617mm | +18 mm |
| Head tube angle | 67° | 67° | ±0.0° |
| Seat tube angle | 74° | 74° | ±0.0° |
| Effective top tube | 587mm | 646mm | +59 mm |
| Chainstay length | 420mm | 420mm | ±0 mm |
| Wheelbase | 1126mm | 1184mm | +58 mm |
| BB drop | 18mm | 18mm | ±0 mm |
| Standover | 748mm | 764mm | +16 mm |
| Seat tube length | 430mm | 523mm | +93 mm |
| Fork length | 542mm | 542mm | ±0 mm |
| Head tube length | 105mm | 95mm | −10 mm |
Differences are the Specialized Stumpjumper 27.5 Frameset minus the Specialized Stumpjumper FSR 650b Frameset. Full charts: 2017 Specialized Stumpjumper FSR 650b Frameset, 2018 Specialized Stumpjumper 27.5 Frameset.
Where each sits in its class
Specialized Stumpjumper FSR 650b FramesetSpecialized Stumpjumper 27.5 Frameset
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 FSR 650b FramesetS-Works 650b Frameset | Specialized Stumpjumper 27.5 FramesetS-Works Frameset |
|---|---|---|
| Rear shock | Öhlins STX | Öhlins STX |
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