2017 Specialized Stumpjumper FSR 650b vs 2018 Specialized Stumpjumper 27.5
The XL is the Specialized Stumpjumper 27.5 size closest to your XL Specialized Stumpjumper FSR 650b. 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 FSR 650b in XL, the Specialized Stumpjumper 27.5 in XL places the top of the head tube at about the same height and about as far forward, relative to the bottom bracket.
- Frame stack
- ±0 mm
- About the same height
- Frame reach
- ±0 mm
- About the same reach
- Wheelbase
- ±0 mm
- About the same
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Stumpjumper FSR 650b, XLSpecialized Stumpjumper 27.5, XLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Stumpjumper FSR 650b XL | Specialized Stumpjumper 27.5 XL | Difference |
|---|---|---|---|
| Reach | 464mm | 464mm | ±0 mm |
| Stack | 617mm | 617mm | ±0 mm |
| Head tube angle | 67° | 67° | ±0.0° |
| Seat tube angle | 74° | 74° | ±0.0° |
| Effective top tube | 646mm | 646mm | ±0 mm |
| Chainstay length | 420mm | 420mm | ±0 mm |
| Wheelbase | 1184mm | 1184mm | ±0 mm |
| BB drop | 18mm | 18mm | ±0 mm |
| Standover | 764mm | 764mm | ±0 mm |
| Seat tube length | 523mm | 523mm | ±0 mm |
| Fork length | 542mm | 542mm | ±0 mm |
| Head tube length | 125mm | not listed |
Differences are the Specialized Stumpjumper 27.5 minus the Specialized Stumpjumper FSR 650b. Full charts: 2017 Specialized Stumpjumper FSR 650b, 2018 Specialized Stumpjumper 27.5.
Where each sits in its class
Specialized Stumpjumper FSR 650bSpecialized 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 650bS-Works 650b | Specialized Stumpjumper 27.5S-Works 27.5 |
|---|---|---|
| Fork | RockShox Pike RCT3 | Öhlins RXF 36 |
| Rear shock | Öhlins STX | Öhlins STX |
| Shifter | SRAM XX1 Eagle | SRAM XX1 Eagle |
| Derailleur | SRAM XX1 Eagle | SRAM XX1 Eagle |
| Cassette | SRAM X01 Eagle | SRAM X01 Eagle |
| Chain | SRAM XX1 Eagle | SRAM X01 Eagle |
| Crankset | SRAM XX1 Eagle | SRAM XX1 Eagle |
| Tire | Specialized Butcher, Specialized Slaughter | Specialized Butcher |
| Hub | Roval Traverse, Roval Traverse SL | Roval Traverse SL |
| Rim | Roval Traverse SL 650 | Roval Traverse SL 27.5 |
| Brake | SRAM Guide RS | SRAM Guide RS |
| Stem | Syntace F109 | Syntace F109 |
| Grips | Specialized Sip Grip | Specialized Sip Grip |
| Dropper post | Specialized Command Post IRcc | not listed |
| Seatpost | Specialized Command Post IRcc | Specialized Command Post IRcc |
| Saddle | Specialized Henge Expert | Specialized Henge Expert |
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