2026 Specialized Stumpjumper 15 EVO Alloy SRAM Eagle, RockShox/X-Fusion vs 2026 Trek Fuel MX Gen 7
The L is the Trek Fuel MX Gen 7 size closest to your S4 Specialized Stumpjumper 15 EVO Alloy SRAM Eagle, RockShox/X-Fusion. 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 Fuel MX Gen 7
Compared with the Specialized Stumpjumper 15 EVO Alloy SRAM Eagle, RockShox/X-Fusion in S4, the Trek Fuel MX Gen 7 in L places the top of the head tube 3 mm lower and 12 mm further forward, relative to the bottom bracket. Its wheelbase is 15 mm longer, which can contribute to stability at speed.
- Frame stack
- −3 mm
- Lower front end
- Frame reach
- +12 mm
- Longer frame reach
- Wheelbase
- +15 mm
- Longer: steadier at speed
- Head angle
- +0.2°
- About the same head angle
- Chainstays
- +4 mm
- Longer: more planted
The two frames
We can't draw these frames yet. The Specialized Stumpjumper 15 EVO Alloy SRAM Eagle, RockShox/X-Fusion numbers we have for size S4 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Specialized Stumpjumper 15 EVO Alloy SRAM Eagle, RockShox/X-Fusion S4 | Trek Fuel MX Gen 7 L | Difference |
|---|---|---|---|
| Reach | 470mm | 482 | +12 mm |
| Stack | 644mm | 641 | −3 mm |
| Head tube angle | 64° | 64.2° | +0.2° |
| Effective top tube | 625mm | 618 | −7 mm |
| Chainstay length | 435mm | 439 | +4 mm |
| Wheelbase | 1249mm | 1264 | +15 mm |
| BB drop | 35mm | 31 | −4 mm |
| BB height | 340mm | 343 | +3 mm |
| Standover | 745mm | 752 | +7 mm |
| Seat tube length | 425mm | 420 | −5 mm |
| Fork length | 573mm | not listed | |
| Head tube length | 125mm | 125 | ±0 mm |
| Seat tube angle | not listed | 77.0° |
Differences are the Trek Fuel MX Gen 7 minus the Specialized Stumpjumper 15 EVO Alloy SRAM Eagle, RockShox/X-Fusion. Full charts: 2026 Specialized Stumpjumper 15 EVO Alloy SRAM Eagle, RockShox/X-Fusion, 2026 Trek Fuel MX Gen 7.
Where each sits in its class
Specialized Stumpjumper 15 EVO Alloy SRAM Eagle, RockShox/X-FusionTrek Fuel MX Gen 7
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 15 EVO Alloy SRAM Eagle, RockShox/X-FusionAlloy - SRAM NX Eagle, RockShox/X-Fusion | Trek Fuel MX Gen 79 Eagle 90 Gen 7 |
|---|---|---|
| Rear shock | X-Fusion Pro RL | Fox Float Factory |
| Shifter | SRAM NX Eagle | SRAM Eagle 90 Transmission |
| Derailleur | SRAM NX Eagle | SRAM Eagle 90 Transmission |
| Cassette | SRAM NX Eagle | SRAM GX Eagle Transmission |
| Chain | SRAM NX Eagle | SRAM GX Eagle |
| Crankset | SRAM NX Eagle | SRAM Eagle 90 Transmission |
| Bottom bracket | SRAM DUB | SRAM DUB |
| Tire | Specialized Butcher, Specialized Eliminator | Maxxis Assegai |
| Brake | SRAM DB6 | SRAM Maven 4-piston Bronze |
| Dropper post | TranzX Dropper | not listed |
| Saddle | Specialized Bridge Saddle | Trek Verse |
| Frame | not listed | Trek Alpha NEXT Platinum |
| Fork | not listed | Fox 36 Factory |
| Wheelset | not listed | Bontrager Line Comp 30 |
| Rotor | not listed | SRAM HS2 |
| Handlebar | not listed | Race Face Turbine |
| Grips | not listed | Trek Line Elite |
| Seatpost | not listed | Bontrager Line Dropper |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
