2027 Trek Fuel LX 9.8 Gen 7 vs 2027 Trek Fuel MX 9.9 Gen 7
The Trek Fuel MX 9.9 Gen 7 size closest to your L is the L. Compare the L instead
What changes on the Trek Fuel MX 9.9 Gen 7
Compared with the Trek Fuel LX 9.8 Gen 7 in L, the Trek Fuel MX 9.9 Gen 7 in S places the top of the head tube 34 mm lower and 47 mm further back, relative to the bottom bracket. Its wheelbase is 82 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −34 mm
- Lower front end
- Frame reach
- −47 mm
- Shorter frame reach
- Wheelbase
- −82 mm
- Shorter: quicker to change direction
- Head angle
- +0.8°
- Steeper: sharper steering
- Chainstays
- −8 mm
- Shorter: livelier
The two frames
Trek Fuel LX 9.8 Gen 7, LTrek Fuel MX 9.9 Gen 7, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Trek Fuel LX 9.8 Gen 7 L | Trek Fuel MX 9.9 Gen 7 S | Difference |
|---|---|---|---|
| Reach | 473 | 426 | −47 mm |
| Stack | 647 | 613 | −34 mm |
| Head tube angle | 63.4° | 64.2° | +0.8° |
| Seat tube angle | 76.4° | 78.3° | +1.9° |
| Effective top tube | 621 | 549 | −72 mm |
| Chainstay length | 442 | 434 | −8 mm |
| Wheelbase | 1273 | 1191 | −82 mm |
| BB drop | 27 | 31 | +4 mm |
| BB height | 347 | 343 | −4 mm |
| Standover | 759 | 745 | −14 mm |
| Seat tube length | 420 | 370 | −50 mm |
| Head tube length | 125 | 95 | −30 mm |
Differences are the Trek Fuel MX 9.9 Gen 7 minus the Trek Fuel LX 9.8 Gen 7. Full charts: 2027 Trek Fuel LX 9.8 Gen 7, 2027 Trek Fuel MX 9.9 Gen 7.
Where each sits in its class
Trek Fuel LX 9.8 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 9.8 Gen 79.8 Eagle 90 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 |
| Derailleur | SRAM Eagle 90 Transmission | SRAM X0 Eagle AXS |
| Cassette | SRAM GX Eagle Transmission | SRAM X0 Eagle Transmission |
| Chain | SRAM GX Eagle | SRAM X0 Eagle |
| Crankset | SRAM Eagle 90 Transmission | SRAM X0 Eagle |
| Bottom bracket | SRAM DUB | SRAM DUB |
| Wheelset | Bontrager Line Comp 30 | Bontrager Line Pro 30 |
| Tire | Maxxis Minion DHR II | Maxxis Minion DHR II |
| Brake | SRAM Maven 4-piston Bronze | SRAM Maven |
| Rotor | SRAM HS2 | SRAM HS2 |
| Handlebar | Race Face Turbine | Race Face ERA |
| Grips | Trek Line Elite | Trek Line Elite |
| Seatpost | Bontrager Line Dropper | Fox Transfer Neo |
| Saddle | Trek Verse | Trek Aeolus |
| Shifter | not listed | SRAM Pod Controller |
| Battery | not listed | SRAM AXS |
| Stem | not listed | Race Face Turbine |
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