2018 Specialized Stumpjumper Pro 27.5 vs 2020 Specialized Fuse M4
The Specialized Fuse M4 size closest to your M is the S. Compare the S instead
What changes on the Specialized Fuse M4
Compared with the Specialized Stumpjumper Pro 27.5 in M, the Specialized Fuse M4 in XL places the top of the head tube 53 mm higher and 66 mm further forward, relative to the bottom bracket. Its wheelbase is 88 mm longer, which can contribute to stability at speed.
- Frame stack
- +53 mm
- Higher front end
- Frame reach
- +66 mm
- Longer frame reach
- Wheelbase
- +88 mm
- Longer: steadier at speed
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
Only the Specialized Stumpjumper Pro 27.5 is drawn. The Specialized Fuse M4 numbers we have for size XL are missing the chainstay length.
Geometry side by side
| Measurement | Specialized Stumpjumper Pro 27.5 M | Specialized Fuse M4 XL | Difference |
|---|---|---|---|
| Reach | 414mm | 480mm | +66 mm |
| Stack | 599mm | 652mm | +53 mm |
| Head tube angle | 67° | 66.5° | −0.5° |
| Seat tube angle | 74° | 74° | ±0.0° |
| Effective top tube | 587mm | not listed | |
| Chainstay length | 420mm | not listed | |
| Wheelbase | 1126mm | 1214mm | +88 mm |
| BB drop | 18mm | not listed | |
| Standover | 748mm | 793mm | +45 mm |
| Seat tube length | 430mm | 505mm | +75 mm |
| Fork length | 542mm | 540mm | −2 mm |
| Head tube length | 115mm | 125mm | +10 mm |
Differences are the Specialized Fuse M4 minus the Specialized Stumpjumper Pro 27.5. Full charts: 2018 Specialized Stumpjumper Pro 27.5, 2020 Specialized Fuse M4.
Where each sits in its class
Specialized Stumpjumper Pro 27.5Specialized Fuse M4
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 Pro 27.5Pro 27.5 | Specialized Fuse M4 |
|---|---|---|
| Fork | Öhlins RXF 36 | not listed |
| Rear shock | Öhlins STX | not listed |
| Shifter | SRAM X01 Eagle | not listed |
| Derailleur | SRAM X01 Eagle | not listed |
| Cassette | SRAM X01 Eagle | not listed |
| Chain | SRAM X01 Eagle | not listed |
| Crankset | TruVativ Descendant | not listed |
| Tire | Specialized Butcher | not listed |
| Hub | DT Swiss 350 | not listed |
| Rim | Roval Traverse | not listed |
| Brake | SRAM Guide RS | not listed |
| Grips | Specialized Sip Grip | not listed |
| Seatpost | Specialized Command Post IRcc | not listed |
| Saddle | Specialized Henge Expert | not listed |
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