2017 Specialized Stumpjumper FSR Comp 29 vs 2018 Specialized Stumpjumper Comp Alloy 29/6Fattie
The Specialized Stumpjumper Comp Alloy 29/6Fattie size closest to your L is the L. Compare the L instead
What changes on the Specialized Stumpjumper Comp Alloy 29/6Fattie
Compared with the Specialized Stumpjumper FSR Comp 29 in L, the Specialized Stumpjumper Comp Alloy 29/6Fattie in XL places the top of the head tube 18 mm higher and 26 mm further forward, relative to the bottom bracket. Its wheelbase is 34 mm longer, which can contribute to stability at speed.
- Frame stack
- +18 mm
- Higher front end
- Frame reach
- +26 mm
- Longer frame reach
- Wheelbase
- +34 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 Comp 29, LSpecialized Stumpjumper Comp Alloy 29/6Fattie, XLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Stumpjumper FSR Comp 29 L | Specialized Stumpjumper Comp Alloy 29/6Fattie XL | Difference |
|---|---|---|---|
| Reach | 435mm | 461mm | +26 mm |
| Stack | 645mm | 663mm | +18 mm |
| Head tube angle | 67.5° | 67.5° | ±0.0° |
| Seat tube angle | 75° | 75° | ±0.0° |
| Effective top tube | 611mm | 647mm | +36 mm |
| Chainstay length | 437mm | 437mm | ±0 mm |
| Wheelbase | 1172mm | 1206mm | +34 mm |
| BB drop | 36mm | 36mm | ±0 mm |
| Standover | 766mm | 776mm | +10 mm |
| Seat tube length | 468mm | 523mm | +55 mm |
| Fork length | 551mm | 551mm | ±0 mm |
| Head tube length | 125mm | 95mm | −30 mm |
| BB height | not listed | 338mm |
Differences are the Specialized Stumpjumper Comp Alloy 29/6Fattie minus the Specialized Stumpjumper FSR Comp 29. Full charts: 2017 Specialized Stumpjumper FSR Comp 29, 2018 Specialized Stumpjumper Comp Alloy 29/6Fattie.
Where each sits in its class
Specialized Stumpjumper FSR Comp 29Specialized Stumpjumper Comp Alloy 29/6Fattie
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 Comp 29Comp 29 | Specialized Stumpjumper Comp Alloy 29/6FattieComp Alloy 29/6Fattie |
|---|---|---|
| Fork | RockShox Revelation RL | RockShox Reba RL |
| Rear shock | RockShox Monarch RT | RockShox Monarch RT |
| Shifter | SRAM GX | SRAM GX |
| Derailleur | SRAM GX | SRAM GX |
| Cassette | SRAM XG-1150 | SRAM XG-1150 |
| Chain | SRAM PC-1110 | KMC X-11 |
| Crankset | Race Face Aeffect | Race Face Aeffect |
| Tire | Specialized Butcher, Specialized Slaughter | Specialized Butcher, Specialized Purgatory |
| Rim | Roval Traverse 29 | Roval Traverse 29 |
| Brake | SRAM Guide R | SRAM Guide R |
| 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 Comp | Specialized Henge Comp |
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