Q4 Hex Exhaust Silencer 19-26 Yamaha WR YZ 250 F FX - FMF 044452

The FMF Q4 HEX S/A 044452 sets the standard for high performance quiet technology in off-road exhaust systems. Designed with advanced chambers and proprietary multi-stage packing, this slip-on delivers exceptional power gains across the entire RPM range, all while staying compliant with stringent USFS and FIM World Enduro sound regulations. Lighter than stock and built for rugged terrain, the Q4 HEX ensures you feel the power without excess noise, making it ideal for demanding off-road riders.

Features

• Meets USFS and FIM World Enduro sound regulations


• Notice: Closed Course Use Only


• Power gains throughout the RPM range


• Pounds lighter than stock exhaust


• Rugged design, built for off-road endurance


• Spark arrestor included (screen insert)


• Quiet insert included


• Manufactured in the USA


• Only US manufacturer offering dedicated quiet systems

Specifications

• Item ID: 044452


• Type: Slip-On


• Configuration: Single


• Construction: Aluminium


• Finish: Natural


• Midpipe Material: Stainless Steel


• Endcap Material: Stainless Steel


• Spark Arrestor: Screen Insert (included)


• Quiet Insert: Included


• Weight: 7.06 lbs


• Carb Warning: No

Vehicle Fitment

Yamaha

• WR250F (2023–2024)


• YZ250F (2019–2026)


• YZ250FX (2020–2026)