2027 Trek Fuel MX 9.8 Gen 7 vs 2027 Trek Fuel EX Carbon Gen 7
The S is the Trek Fuel EX Carbon Gen 7 size closest to your S Trek Fuel MX 9.8 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 EX Carbon Gen 7
Compared with the Trek Fuel MX 9.8 Gen 7 in S, the Trek Fuel EX Carbon Gen 7 in S places the top of the head tube 3 mm lower and 5 mm further forward, relative to the bottom bracket. Its wheelbase is 4 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −3 mm
- Lower front end
- Frame reach
- +5 mm
- Longer frame reach
- Wheelbase
- −4 mm
- Shorter: quicker to change direction
- Head angle
- +0.4°
- Steeper: sharper steering
- Chainstays
- +3 mm
- Longer: more planted
The two frames
Trek Fuel MX 9.8 Gen 7, STrek Fuel EX Carbon Gen 7, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Trek Fuel MX 9.8 Gen 7 S | Trek Fuel EX Carbon Gen 7 S | Difference |
|---|---|---|---|
| Reach | 426 | 431 | +5 mm |
| Stack | 613 | 610 | −3 mm |
| Head tube angle | 64.2° | 64.6° | +0.4° |
| Seat tube angle | 78.3° | 78.7° | +0.4° |
| Effective top tube | 549 | 548 | −1 mm |
| Chainstay length | 434 | 437 | +3 mm |
| Wheelbase | 1191 | 1187 | −4 mm |
| BB drop | 31 | 34 | +3 mm |
| BB height | 343 | 340 | −3 mm |
| Standover | 745 | 748 | +3 mm |
| Seat tube length | 370 | 370 | ±0 mm |
| Head tube length | 95 | 95 | ±0 mm |
Differences are the Trek Fuel EX Carbon Gen 7 minus the Trek Fuel MX 9.8 Gen 7. Full charts: 2027 Trek Fuel MX 9.8 Gen 7, 2027 Trek Fuel EX Carbon Gen 7.
Where each sits in its class
Trek Fuel MX 9.8 Gen 7Trek Fuel EX Carbon 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 MX 9.8 Gen 79.8 Eagle 90 Gen 7 | Trek Fuel EX Carbon Gen 7Carbon Gen 7 |
|---|---|---|
| Fork | RockShox ZEB B1 Ultimate | not listed |
| Rear shock | RockShox Vivid D1 Ultimate | Fox Float Factory |
| Derailleur | SRAM Eagle 90 Transmission | not listed |
| Cassette | SRAM GX Eagle Transmission | not listed |
| Chain | SRAM GX Eagle | not listed |
| Crankset | SRAM Eagle 90 Transmission | not listed |
| Bottom bracket | SRAM DUB | not listed |
| Battery | SRAM AXS | not listed |
| Wheelset | Bontrager Line Comp 30 | not listed |
| Tire | Maxxis Minion DHR II | not listed |
| Brake | SRAM Maven 4-piston Bronze | not listed |
| Rotor | SRAM HS2 | not listed |
| Handlebar | Race Face Turbine | not listed |
| Grips | Trek Line Elite | not listed |
| Seatpost | Bontrager Line Dropper | not listed |
| Saddle | Trek Verse | not listed |
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