Loading geometry
Trek's long-running trail 29er. Modern years are slack and long-reach; older years ride more like a trail bike of their era. Compare year-to-year before you assume the numbers match.
Trail riders who want one Trek for climbs and descents. A 2006 Fuel EX is not a 2026 Fuel EX.
| Size | Stack | Reach | Stack/reach | Stem | Bar | Crank | Dropper | Head tube angle | Seat tube angle | Chainstay | Wheelbase | BB drop | Wheel size |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S | 610 mm | 430 mm | 1.42:1 | 50 mm | 800 mm | 175 mm | 170 mm | 65.0° | 76.5° | 435 mm | 1185 mm | 35 mm | 29" |
| M | 620 mm | 455 mm | 1.36:1 | 50 mm | 800 mm | 175 mm | 170 mm | 65.0° | 76.8° | 435 mm | 1210 mm | 35 mm | 29" |
| L | 630 mm | 480 mm | 1.31:1 | 50 mm | 800 mm | 175 mm | 170 mm | 65.0° | 77.0° | 435 mm | 1238 mm | 35 mm | 29" |
| XL | 644 mm | 505 mm | 1.28:1 | 50 mm | 800 mm | 175 mm | 170 mm | 65.0° | 77.2° | 435 mm | 1268 mm |
This year's studio shot is Fuel EX 5.
Same published geometry as 2024.
No verified spec sheet for 2025 or 2024.
No launch MSRP in the catalog yet.
Wil's Trek Fuel EX Alloy puts money where it mattersFlow Mountain Bike · 2025
TESTED: Trek Fuel EX 9.9Flow Mountain Bike · 2019
Review | The 2019 Trek Fuel EX 9.7 is a tech-heavy trail ...Singletrack · 2019
Trek Fuel EX 8.0 XT 2020 on test – Versatility for the Best BuyENDURO Mountainbike Magazine · 2020
Trek Fuel EX 9.9 X01 AXS Project One on testENDURO Mountainbike Magazine · 2020| 35 mm |
| 29" |
| XXL | 658 mm | 525 mm | 1.25:1 | 50 mm | 800 mm | 175 mm | 170 mm | 65.0° | 77.4° | 435 mm | 1294 mm | 35 mm | 29" |
