2026 Trek Fuel LX Gen 7 vs 2026 Trek Fuel MX Gen 7
The Trek Fuel MX Gen 7 size closest to your M is the M. Compare the M instead
What changes on the Trek Fuel MX Gen 7
Compared with the Trek Fuel LX Gen 7 in M, the Trek Fuel MX Gen 7 in XL places the top of the head tube 21 mm higher and 59 mm further forward, relative to the bottom bracket. Its wheelbase is 64 mm longer, which can contribute to stability at speed.
- Frame stack
- +21 mm
- Higher front end
- Frame reach
- +59 mm
- Longer frame reach
- Wheelbase
- +64 mm
- Longer: steadier at speed
- Head angle
- +0.8°
- Steeper: sharper steering
- Chainstays
- +7 mm
- Longer: more planted
The two frames
Trek Fuel LX Gen 7, MTrek Fuel MX Gen 7, XLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Trek Fuel LX Gen 7 M | Trek Fuel MX Gen 7 XL | Difference |
|---|---|---|---|
| Reach | 448 | 507 | +59 mm |
| Stack | 633 | 654 | +21 mm |
| Head tube angle | 63.4° | 64.2° | +0.8° |
| Seat tube angle | 77.2° | 76.6° | −0.6° |
| Effective top tube | 586 | 652 | +66 mm |
| Chainstay length | 437 | 444 | +7 mm |
| Wheelbase | 1237 | 1301 | +64 mm |
| BB drop | 27 | 31 | +4 mm |
| BB height | 347 | 343 | −4 mm |
| Standover | 754 | 763 | +9 mm |
| Seat tube length | 400 | 455 | +55 mm |
| Head tube length | 110 | 140 | +30 mm |
Differences are the Trek Fuel MX Gen 7 minus the Trek Fuel LX Gen 7. Full charts: 2026 Trek Fuel LX Gen 7, 2026 Trek Fuel MX Gen 7.
Where each sits in its class
Trek Fuel LX Gen 7Trek 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 | Trek Fuel LX Gen 7 | Trek Fuel MX Gen 79 Eagle 90 Gen 7 |
|---|---|---|
| Frame | not listed | Trek Alpha NEXT Platinum |
| Fork | not listed | Fox 36 Factory |
| Rear shock | not listed | Fox Float Factory |
| Shifter | not listed | SRAM Eagle 90 Transmission |
| Derailleur | not listed | SRAM Eagle 90 Transmission |
| Cassette | not listed | SRAM GX Eagle Transmission |
| Chain | not listed | SRAM GX Eagle |
| Crankset | not listed | SRAM Eagle 90 Transmission |
| Bottom bracket | not listed | SRAM DUB |
| Wheelset | not listed | Bontrager Line Comp 30 |
| Tire | not listed | Maxxis Assegai |
| Brake | not listed | SRAM Maven 4-piston Bronze |
| Rotor | not listed | SRAM HS2 |
| Handlebar | not listed | Race Face Turbine |
| Grips | not listed | Trek Line Elite |
| Seatpost | not listed | Bontrager Line Dropper |
| Saddle | not listed | Trek Verse |
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