2027 Trek Fuel LX 9.9 Gen 7 vs 2027 Trek Fuel MX 9.9 Gen 7
The S is the Trek Fuel MX 9.9 Gen 7 size closest to your S Trek Fuel LX 9.9 Gen 7. 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 Trek Fuel LX 9.9 Gen 7 in S, the Trek Fuel MX 9.9 Gen 7 in S places the top of the head tube 6 mm lower and 8 mm further forward, relative to the bottom bracket. Its wheelbase is 9 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −6 mm
- Lower front end
- Frame reach
- +8 mm
- Longer frame reach
- Wheelbase
- −9 mm
- Shorter: quicker to change direction
- Head angle
- +0.8°
- Steeper: sharper steering
- Chainstays
- −3 mm
- Shorter: livelier
The two frames
Trek Fuel LX 9.9 Gen 7, STrek Fuel MX 9.9 Gen 7, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Trek Fuel LX 9.9 Gen 7 S | Trek Fuel MX 9.9 Gen 7 S | Difference |
|---|---|---|---|
| Reach | 418 | 426 | +8 mm |
| Stack | 619 | 613 | −6 mm |
| Head tube angle | 63.4° | 64.2° | +0.8° |
| Seat tube angle | 77.5° | 78.3° | +0.8° |
| Effective top tube | 552 | 549 | −3 mm |
| Chainstay length | 437 | 434 | −3 mm |
| Wheelbase | 1200 | 1191 | −9 mm |
| BB drop | 26 | 31 | +5 mm |
| BB height | 347 | 343 | −4 mm |
| Standover | 750 | 745 | −5 mm |
| Seat tube length | 370 | 370 | ±0 mm |
| Head tube length | 95 | 95 | ±0 mm |
Differences are the Trek Fuel MX 9.9 Gen 7 minus the Trek Fuel LX 9.9 Gen 7. Full charts: 2027 Trek Fuel LX 9.9 Gen 7, 2027 Trek Fuel MX 9.9 Gen 7.
Where each sits in its class
Trek Fuel LX 9.9 Gen 7Trek 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 | Trek Fuel LX 9.9 Gen 79.9 X0 AXS Gen 7 | Trek Fuel MX 9.9 Gen 79.9 X0 AXS Gen 7 |
|---|---|---|
| Fork | RockShox ZEB B1 Ultimate | RockShox ZEB B1 Ultimate |
| Rear shock | RockShox Vivid D1 Ultimate | RockShox Vivid D1 Ultimate |
| Shifter | SRAM Pod Controller | SRAM Pod Controller |
| Derailleur | SRAM X0 Eagle AXS | SRAM X0 Eagle AXS |
| Cassette | SRAM X0 Eagle Transmission | SRAM X0 Eagle Transmission |
| Chain | SRAM X0 Eagle | SRAM X0 Eagle |
| Crankset | SRAM X0 Eagle | SRAM X0 Eagle |
| Bottom bracket | SRAM DUB | SRAM DUB |
| Battery | SRAM AXS | SRAM AXS |
| Wheelset | Bontrager Line Pro 30 | Bontrager Line Pro 30 |
| Tire | Maxxis Minion DHR II | Maxxis Minion DHR II |
| Brake | SRAM Maven | SRAM Maven |
| Rotor | SRAM HS2 | SRAM HS2 |
| Handlebar | Race Face ERA | Race Face ERA |
| Stem | Race Face Turbine | Race Face Turbine |
| Grips | Trek Line Elite | Trek Line Elite |
| Seatpost | Fox Transfer Neo | Fox Transfer Neo |
| Saddle | Trek Aeolus | Trek Aeolus |
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