2025 Specialized Enduro vs 2027 Trek Fuel MX 9.9 Gen 7
The L is the Trek Fuel MX 9.9 Gen 7 size closest to your S4 Specialized Enduro. 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 9.9 Gen 7
Compared with the Specialized Enduro in S4, the Trek Fuel MX 9.9 Gen 7 in L places the top of the head tube 12 mm higher and 5 mm further back, relative to the bottom bracket. Its wheelbase is 10 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- +12 mm
- Higher front end
- Frame reach
- −5 mm
- Shorter frame reach
- Wheelbase
- −10 mm
- Shorter: quicker to change direction
- Head angle
- +0.3°
- Steeper: sharper steering
- Chainstays
- −3 mm
- Shorter: livelier
The two frames
Specialized Enduro, S4Trek Fuel MX 9.9 Gen 7, LDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Enduro S4 | Trek Fuel MX 9.9 Gen 7 L | Difference |
|---|---|---|---|
| Reach | 487mm | 482 | −5 mm |
| Stack | 629mm | 641 | +12 mm |
| Head tube angle | 63.9° | 64.2° | +0.3° |
| Seat tube angle | 76° | 77.0° | +1.0° |
| Effective top tube | not listed | 618 | |
| Chainstay length | 442mm | 439 | −3 mm |
| Wheelbase | 1274mm | 1264 | −10 mm |
| Seat tube length | 440mm | 420 | −20 mm |
| Fork length | not listed | not listed | |
| Head tube length | 110mm | 125 | +15 mm |
| BB drop | not listed | 31 | |
| BB height | not listed | 343 | |
| Standover | not listed | 754 |
Differences are the Trek Fuel MX 9.9 Gen 7 minus the Specialized Enduro. Full charts: 2025 Specialized Enduro, 2027 Trek Fuel MX 9.9 Gen 7.
Where each sits in its class
Specialized EnduroTrek Fuel MX 9.9 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 EnduroS-Works | Trek Fuel MX 9.9 Gen 79.9 X0 AXS Gen 7 |
|---|---|---|
| Rear shock | RockShox Vivid Ultimate | RockShox Vivid D1 Ultimate |
| Fork | not listed | RockShox ZEB B1 Ultimate |
| Shifter | not listed | SRAM Pod Controller |
| Derailleur | not listed | SRAM X0 Eagle AXS |
| Cassette | not listed | SRAM X0 Eagle Transmission |
| Chain | not listed | SRAM X0 Eagle |
| Crankset | not listed | SRAM X0 Eagle |
| Bottom bracket | not listed | SRAM DUB |
| Battery | not listed | SRAM AXS |
| Wheelset | not listed | Bontrager Line Pro 30 |
| Tire | not listed | Maxxis Minion DHR II |
| Brake | not listed | SRAM Maven |
| Rotor | not listed | SRAM HS2 |
| Handlebar | not listed | Race Face ERA |
| Stem | not listed | Race Face Turbine |
| Grips | not listed | Trek Line Elite |
| Seatpost | not listed | Fox Transfer Neo |
| Saddle | not listed | Trek Aeolus |
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