2020 Specialized Fuse M4 vs 2018 Specialized Stumpjumper 27.5 Frameset
The XL is the Specialized Stumpjumper 27.5 Frameset size closest to your L 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 Frameset
Compared with the Specialized Fuse M4 in L, the Specialized Stumpjumper 27.5 Frameset in XL places the top of the head tube 22 mm lower and 4 mm further forward, relative to the bottom bracket. Its wheelbase is 4 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −22 mm
- Lower front end
- Frame reach
- +4 mm
- Longer frame reach
- Wheelbase
- −4 mm
- Shorter: quicker to change direction
- 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 L are missing the chainstay length. The numbers below still compare.
Geometry side by side
| Measurement | Specialized Fuse M4 L | Specialized Stumpjumper 27.5 Frameset XL | Difference |
|---|---|---|---|
| Reach | 460mm | 464mm | +4 mm |
| Stack | 639mm | 617mm | −22 mm |
| Head tube angle | 66.5° | 67° | +0.5° |
| Seat tube angle | 74° | 74° | ±0.0° |
| Wheelbase | 1188mm | 1184mm | −4 mm |
| Standover | 754mm | 764mm | +10 mm |
| Seat tube length | 455mm | 523mm | +68 mm |
| Fork length | 540mm | 542mm | +2 mm |
| Head tube length | 110mm | 95mm | −15 mm |
| Effective top tube | not listed | 646mm | |
| Chainstay length | not listed | 420mm | |
| BB drop | not listed | 18mm |
Differences are the Specialized Stumpjumper 27.5 Frameset minus the Specialized Fuse M4. Full charts: 2020 Specialized Fuse M4, 2018 Specialized Stumpjumper 27.5 Frameset.
Where each sits in its class
Specialized Fuse M4Specialized Stumpjumper 27.5 Frameset
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 27.5 FramesetS-Works Frameset |
|---|---|---|
| Rear shock | not listed | Öhlins STX |
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