2017 Specialized Stumpjumper FSR 650b Frameset vs 2018 Specialized Stumpjumper 27.5
The Specialized Stumpjumper 27.5 size closest to your M is the M. Compare the M instead
What changes on the Specialized Stumpjumper 27.5
Compared with the Specialized Stumpjumper FSR 650b Frameset in M, the Specialized Stumpjumper 27.5 in S places the top of the head tube 9 mm lower and 26 mm further back, relative to the bottom bracket. Its wheelbase is 30 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −9 mm
- Lower front end
- Frame reach
- −26 mm
- Shorter frame reach
- Wheelbase
- −30 mm
- Shorter: quicker to change direction
- 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, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Stumpjumper FSR 650b Frameset M | Specialized Stumpjumper 27.5 S | Difference |
|---|---|---|---|
| Reach | 414mm | 388mm | −26 mm |
| Stack | 599mm | 590mm | −9 mm |
| Head tube angle | 67° | 67° | ±0.0° |
| Seat tube angle | 74° | 74° | ±0.0° |
| Effective top tube | 587mm | 558mm | −29 mm |
| Chainstay length | 420mm | 420mm | ±0 mm |
| Wheelbase | 1126mm | 1096mm | −30 mm |
| BB drop | 18mm | 18mm | ±0 mm |
| Standover | 748mm | 742mm | −6 mm |
| Seat tube length | 430mm | 396mm | −34 mm |
| Fork length | 542mm | 542mm | ±0 mm |
| Head tube length | 105mm | 105mm | ±0 mm |
Differences are the Specialized Stumpjumper 27.5 minus the Specialized Stumpjumper FSR 650b Frameset. Full charts: 2017 Specialized Stumpjumper FSR 650b Frameset, 2018 Specialized Stumpjumper 27.5.
Where each sits in its class
Specialized Stumpjumper FSR 650b FramesetSpecialized 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 FSR 650b FramesetS-Works 650b Frameset | Specialized Stumpjumper 27.5S-Works 27.5 |
|---|---|---|
| Rear shock | Öhlins STX | Öhlins STX |
| Fork | not listed | Öhlins RXF 36 |
| Shifter | not listed | SRAM XX1 Eagle |
| Derailleur | not listed | SRAM XX1 Eagle |
| Cassette | not listed | SRAM X01 Eagle |
| Chain | not listed | SRAM X01 Eagle |
| Crankset | not listed | SRAM XX1 Eagle |
| Tire | not listed | Specialized Butcher |
| Hub | not listed | Roval Traverse SL |
| Rim | not listed | Roval Traverse SL 27.5 |
| Brake | not listed | SRAM Guide RS |
| Stem | not listed | Syntace F109 |
| Grips | not listed | Specialized Sip Grip |
| Seatpost | not listed | Specialized Command Post IRcc |
| Saddle | not listed | Specialized Henge Expert |
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