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 9.8 XT Gen 7.
Same published geometry as 2025.
These are the verified 2026 builds. No 2025 sheet to compare.
2026 launch prices are in. No 2025 MSRP to compare.
2026 Trek Fuel EX 8 Review | Redefining the modern trail ...Flow Mountain Bike · 2025
Trek Fuel EX 2026 - Bikes - MBRMBR · 2025
Review: The 2026 Trek Fuel EX Is Probably All the Bike You NeedPinkbike · 2026
Trek Fuel EX 8 longer term reviewSingletrack · 2026
Trek Fuel EX 8 Gen 7 Review: Specs and Ride ImpressionsAustralian Mountain Bike · 2026$2,999 · 2026 launch MSRP
| Component | Brand | Model | Size |
|---|---|---|---|
| Shifters | Shimano | Shimano Deore 12-speed | 1×12 |
| Rear derailleur | Shimano | Shimano Deore 12-speed | — |
| Crankset | Shimano | Shimano Deore 12-speed |
|
| Cassette | Shimano | 12-speed | — |
| Chain | Shimano | 12-speed | — |
| Power meter | — | None | — |
| Brakes | Shimano | hydraulic disc | — |
| Rotors | Shimano | 180mm | — |
| Wheels | Alloy | 29" wheelset | 700c |
| Tires | 29×2.4" | trail | — |
| Fork | 130–150 | mm trail fork | — |
| Shock | Matching | trail shock | — |
| 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" |
| Dropper |
|---|
| 150–170 |
| mm dropper |
| — |
$3,999 · 2026 launch MSRP
| Component | Brand | Model | Size |
|---|---|---|---|
| Shifters | Shimano | Shimano Deore 12-speed | 1×12 |
| Rear derailleur | Shimano | Shimano Deore 12-speed | — |
| Crankset | Shimano | Shimano Deore 12-speed |
|
| Cassette | Shimano | 12-speed | — |
| Chain | Shimano | 12-speed | — |
| Power meter | — | None | — |
| Brakes | Shimano | hydraulic disc | — |
| Rotors | Shimano | 180mm | — |
| Wheels | Alloy | 29" wheelset | 700c |
| Tires | 29×2.4" | trail | — |
| Fork | 130–150 | mm trail fork | — |
| Shock | Matching | trail shock | — |
| Dropper | 150–170 | mm dropper | — |
$5,999 · 2026 launch MSRP
| Component | Brand | Model | Size |
|---|---|---|---|
| Shifters | SRAM | SRAM GX Eagle Transmission | 1×12 |
| Rear derailleur | SRAM | SRAM GX Eagle Transmission | — |
| Crankset | SRAM | SRAM GX Eagle Transmission |
|
| Cassette | SRAM | 12-speed | — |
| Chain | SRAM | 12-speed | — |
| Power meter | — | None | — |
| Brakes | SRAM | hydraulic disc | — |
| Rotors | SRAM | 180mm | — |
| Wheels | Alloy | 29" wheelset | 700c |
| Tires | 29×2.4" | trail | — |
| Fork | 130–150 | mm trail fork | — |
| Shock | Matching | trail shock | — |
| Dropper | 150–170 | mm dropper | — |
$8,499 · 2026 launch MSRP
| Component | Brand | Model | Size |
|---|---|---|---|
| Shifters | SRAM | SRAM XX Eagle Transmission | 1×12 |
| Rear derailleur | SRAM | SRAM XX Eagle Transmission | — |
| Crankset | SRAM | SRAM XX Eagle Transmission |
|
| Cassette | SRAM | 12-speed | — |
| Chain | SRAM | 12-speed | — |
| Power meter | — | None | — |
| Brakes | SRAM | hydraulic disc | — |
| Rotors | SRAM | 180mm | — |
| Wheels | Carbon | 29" trail/XC wheelset | 700c |
| Tires | 29×2.4" | trail | — |
| Fork | 130–150 | mm trail fork | — |
| Shock | Matching | trail shock | — |
| Dropper | 150–170 | mm dropper | — |
