2016 Specialized Stumpjumper FSR 650b 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 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, MSpecialized Stumpjumper 27.5, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Stumpjumper FSR 650b M | Specialized Stumpjumper 27.5 S | Difference |
|---|---|---|---|
| Reach | 414 | 388mm | −26 mm |
| Stack | 599 | 590mm | −9 mm |
| Head tube angle | 67 | 67° | ±0.0° |
| Seat tube angle | 74 | 74° | ±0.0° |
| Effective top tube | 587 | 558mm | −29 mm |
| Chainstay length | 420 | 420mm | ±0 mm |
| Wheelbase | 1126 | 1096mm | −30 mm |
| BB drop | 18 | 18mm | ±0 mm |
| BB height | 335 | not listed | |
| Standover | 743 | 742mm | −1 mm |
| Seat tube length | 430 | 396mm | −34 mm |
| Fork length | 542 | 542mm | ±0 mm |
| Head tube length | 105 | 105mm | ±0 mm |
Differences are the Specialized Stumpjumper 27.5 minus the Specialized Stumpjumper FSR 650b. Full charts: 2016 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 | Fox FLOAT CTD Factory | Öhlins STX |
| Shifter | SRAM XX1 | SRAM XX1 Eagle |
| Derailleur | SRAM XX1 | SRAM XX1 Eagle |
| Cassette | SRAM XX1 | SRAM X01 Eagle |
| Chain | SRAM PC-XX1 | SRAM X01 Eagle |
| Crankset | S Works FACT carbon | SRAM XX1 Eagle |
| Bottom bracket | SRAM PF30 | not listed |
| Wheelset | Roval Traverse SL | not listed |
| Tire | Specialized Butcher Control, Specialized Purgatory Control | Specialized Butcher |
| Rim | Roval Traverse SL 650b | Roval Traverse SL 27.5 |
| Brake | Shimano XTR | SRAM Guide RS |
| Handlebar | Specialized FACT carbon | not listed |
| Stem | Syntace F109 | Syntace F109 |
| Grips | Specialized Sip Grip | Specialized Sip Grip |
| Headset | Specialized Hella Flush | not listed |
| Dropper post | Specialized Command Post IRcc | not listed |
| Seatpost | Specialized Command Post IRcc | Specialized Command Post IRcc |
| Saddle | Specialized Henge Expert | Specialized Henge Expert |
| Hub | not listed | Roval Traverse SL |
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