2020 Specialized Stumpjumper ST Alloy 27.5 vs 2020 Trek Slash
The XL is the Trek Slash size closest to your XL Specialized Stumpjumper ST Alloy 27.5. 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 Trek Slash
Compared with the Specialized Stumpjumper ST Alloy 27.5 in XL, the Trek Slash in XL places the top of the head tube 6 mm lower and about as far forward, relative to the bottom bracket. Its wheelbase is 4 mm longer, which can contribute to stability at speed.
- Frame stack
- −6 mm
- Lower front end
- Frame reach
- +1 mm
- About the same reach
- Wheelbase
- +4 mm
- Longer: steadier at speed
- Head angle
- +0.1°
- About the same head angle
- Chainstays
- +1 mm
- About the same
The two frames
Only the Specialized Stumpjumper ST Alloy 27.5 is drawn. The Trek Slash numbers we have for size XL are missing the seat angle.
Geometry side by side
| Measurement | Specialized Stumpjumper ST Alloy 27.5 XL | Trek Slash XL | Difference |
|---|---|---|---|
| Reach | 480mm | 481 | +1 mm |
| Stack | 637mm | 631 | −6 mm |
| Head tube angle | 65.5° | 65.6° | +0.1° |
| Seat tube angle | 74.2° | not listed | |
| Chainstay length | 432mm | 433 | +1 mm |
| Wheelbase | 1243mm | 1247 | +4 mm |
| BB drop | 21mm | 21 | ±0 mm |
| BB height | 336mm | 352 | +16 mm |
| Standover | 770mm | 780 | +10 mm |
| Seat tube length | 505mm | 521 | +16 mm |
| Fork length | 542mm | not listed | |
| Head tube length | 155mm | 125 | −30 mm |
| Effective top tube | not listed | 651 |
Differences are the Trek Slash minus the Specialized Stumpjumper ST Alloy 27.5. Full charts: 2020 Specialized Stumpjumper ST Alloy 27.5, 2020 Trek Slash.
Where each sits in its class
Specialized Stumpjumper ST Alloy 27.5Trek Slash
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 ST Alloy 27.5 | Trek Slash8 |
|---|---|---|
| Frame | not listed | Trek Alpha Platinum |
| Fork | not listed | RockShox Yari RC |
| Rear shock | not listed | RockShox Deluxe RT3 RE:aktiv |
| Shifter | not listed | SRAM GX Eagle |
| Derailleur | not listed | SRAM GX Eagle |
| Cassette | not listed | SRAM GX Eagle |
| Chain | not listed | SRAM GX Eagle |
| Crankset | not listed | TruVativ Descendant |
| Bottom bracket | not listed | SRAM DUB |
| Wheelset | not listed | Bontrager Line Comp 30 |
| Tire | not listed | Bontrager XR5 |
| Brake | not listed | SRAM Guide R |
| Rotor | not listed | SRAM Guide R |
| Handlebar | not listed | Bontrager Line |
| Stem | not listed | Bontrager Line |
| Headset | not listed | Trek Knock Block |
| Seatpost | not listed | Bontrager Line |
| Saddle | not listed | Bontrager Arvada |
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