2020 Specialized Fuse M4 vs 2018 Specialized Stumpjumper 27.5
The M is the Specialized Stumpjumper 27.5 size closest to your XS Specialized Fuse M4. 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 Fuse M4 in XS, the Specialized Stumpjumper 27.5 in M places the top of the head tube 26 mm lower and 14 mm further forward, relative to the bottom bracket. Its wheelbase is 4 mm longer, which can contribute to stability at speed.
- Frame stack
- −26 mm
- Lower front end
- Frame reach
- +14 mm
- Longer frame reach
- Wheelbase
- +4 mm
- Longer: steadier at speed
- Head angle
- +0.5°
- Steeper: sharper steering
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
We can't draw these frames yet. The Specialized Fuse M4 numbers we have for size XS are missing the chainstay length. The numbers below still compare.
Geometry side by side
| Measurement | Specialized Fuse M4 XS | Specialized Stumpjumper 27.5 M | Difference |
|---|---|---|---|
| Reach | 400mm | 414mm | +14 mm |
| Stack | 625mm | 599mm | −26 mm |
| Head tube angle | 66.5° | 67° | +0.5° |
| Seat tube angle | 74° | 74° | ±0.0° |
| Wheelbase | 1122mm | 1126mm | +4 mm |
| Standover | 727mm | 748mm | +21 mm |
| Seat tube length | 340mm | 430mm | +90 mm |
| Fork length | 540mm | 542mm | +2 mm |
| Head tube length | 95mm | 115mm | +20 mm |
| Effective top tube | not listed | 587mm | |
| Chainstay length | not listed | 420mm | |
| BB drop | not listed | 18mm |
Differences are the Specialized Stumpjumper 27.5 minus the Specialized Fuse M4. Full charts: 2020 Specialized Fuse M4, 2018 Specialized Stumpjumper 27.5.
Where each sits in its class
Specialized Fuse M4Specialized 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 Fuse M4 | Specialized Stumpjumper 27.5S-Works 27.5 |
|---|---|---|
| Fork | not listed | Öhlins RXF 36 |
| Rear shock | not listed | Öhlins STX |
| 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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