2026 Transition Smuggler Carbon XO vs 2025 Trek Fuel EX
The XXL is the Trek Fuel EX size closest to your XXL Transition Smuggler Carbon XO. 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
Compared with the Transition Smuggler Carbon XO in XXL, the Trek Fuel EX in XXL places the top of the head tube 4 mm higher and 10 mm further forward, relative to the bottom bracket. Its wheelbase is 17 mm longer, which can contribute to stability at speed.
- Frame stack
- +4 mm
- Higher front end
- Frame reach
- +10 mm
- Longer frame reach
- Wheelbase
- +17 mm
- Longer: steadier at speed
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- +10 mm
- Longer: more planted
The two frames
Only the Transition Smuggler Carbon XO is drawn. The Trek Fuel EX numbers we have for size XXL are missing the seat angle.
Geometry side by side
| Measurement | Transition Smuggler Carbon XO XXL | Trek Fuel EX XXL | Difference |
|---|---|---|---|
| Reach | 535 | 545 | +10 mm |
| Stack | 644 | 648.4 | +4 mm |
| Head tube angle | 65 | 64.5 | −0.5° |
| Seat tube angle | 72 | not listed | |
| Effective top tube | 670 | 696.6 | +27 mm |
| Chainstay length | 440 | 450 | +10 mm |
| Wheelbase | 1306 | 1323.2 | +17 mm |
| BB drop | 35 | 38 | +3 mm |
| BB height | 340 | 335 | −5 mm |
| Seat tube length | 490 | 500 | +10 mm |
| Head tube length | 140 | 135 | −5 mm |
| Standover | not listed | 773.8 |
Differences are the Trek Fuel EX minus the Transition Smuggler Carbon XO. Full charts: 2026 Transition Smuggler Carbon XO, 2025 Trek Fuel EX.
Where each sits in its class
Transition Smuggler Carbon XOTrek Fuel EX
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 | Transition Smuggler Carbon XOCarbon XO AXS | Trek Fuel EX5 |
|---|---|---|
| Frame | Transition Smuggler | Trek Fuel EX |
| Fork | RockShox Pike Ultimate Charger 2.1 RC2 | RockShox Recon Silver |
| Rear shock | RockShox Super Deluxe Ultimate Trunnion | X-Fusion Pro 2 |
| Shifter | SRAM Pod Controller Ultimate | Shimano Deore M6100 |
| Derailleur | SRAM X0 Eagle AXS | Shimano Deore M6100 |
| Cassette | SRAM X0 Eagle Transmission | Shimano Deore M6100 |
| Chain | SRAM X0 Eagle | Shimano Deore M6100 |
| Crankset | SRAM X0 Eagle | Shimano MT512 |
| Wheelset | crankbrothers Synthesis Enduro | Bontrager Line TLR 30 |
| Tire | Maxxis Assegai, Maxxis Dissector | Bontrager Gunnison |
| Brake | SRAM Code RSC | Shimano MT200 |
| Rotor | SRAM HS2 | Shimano SM-RT56 |
| Handlebar | OneUp Components Carbon | TranzX JD-YSI-22PLQ |
| Stem | ANVL Swage | Bontrager Comp |
| Grips | ODI Elite Flow | Bontrager XR Trail |
| Headset | FSA No.42/48/ACB | not listed |
| Dropper post | OneUp Components dropper post | TranzX JD-YSI-22PLQ |
| Saddle | SDG Bel Air 3 | Bontrager Arvada |
| Chainring | not listed | Shimano MT512 |
| Bottom bracket | not listed | Shimano MT501 |
| Rim | not listed | Bontrager Line 30 |
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