What headset does a Trek Fuel EX (Gen 6 on) use?
The headset fitment standard on a Trek Fuel EX (Gen 6 on), and how to pick the right part.
This frame's fitment
| Frame | Trek Fuel EX (Gen 6 on) |
|---|---|
| Headset standard | ZS44 (zero stack, 44 mm) |
| Cup / bearing outside diameter | 44.0 mm cup outside diameter, 43.9 to 43.95 mm head-tube bore |
| Steerer diameter | 28.6 mm (1 1/8 in) |
The current Trek Fuel EX uses a ZS44 upper zero-stack headset, a 34.9 mm dropper seatpost and a 15x110 Boost front thru-axle, with a 12x148 Boost rear.
The Fuel EX is 1x with no front derailleur. The bottom bracket returned to a 73 mm BSA threaded shell, covered on its own page.
The part to buy
Search Amazon for ZS44 for your Trek Fuel EX (Gen 6 on)affiliate searchFind ZS44 for your Trek Fuel EX (Gen 6 on) on eBayaffiliate
Related fitment pages
ZS44zero stack, 44 mmBottom bracket for Trek Fuel EX (Gen 6 on)same frame, BB shellSeatpost diameter on a Trek Fuel EX (Gen 6 on)same frameZS44 on a Specialized Stumpjumper (2019 on carbon)same standard, another frame
SOURCES: White Industries, ZS44/EC44 headset · Park Tool, Standardized Headset Identification System (SHIS) · BikeRadar, Mountain bike axle standards: the complete guide