FMF 4 Stroke Q4 HEX - Slip On Stock Item:I Q4 S/A Muffler YZ250FX 2020 YZ250F 2019-22 Slip On The 010 Apex radial rear

The 010 Apex radial rear features Zero Degree JLSB (Joint-Less Steel Belted) state-of-the-art technology for added stability and strength while the 010 Apex front is Aramid belted for enhanced high-speed performance

Redesigned and improved billet gauge manifold with integrated pressure release valve

~ Aggressive tread pattern with drop lug construction

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RK’s flagship model

FMF 4 Stroke Q4 HEX - Slip On Stock Item:I Q4 S/A Muffler YZ250FX 2020 YZ250F 2019-22 Slip On The 010 Apex radial rearQ4 HEX: FMF is the leader in high performance quiet technology and the Q4 HEX is the next evolution in offroad exhaust. The Q4 HEX silencer employs intricate chambers, baffles and proprietary multi stage packing material making it the best performing quiet muffler available. With the Q4 HEX you dont need to hear the power, just feel the power! Less sound equals more ground Meets USFS and FIM World Enduro sound regulations Power gains throughout the