Exhaust System Q4 HEX Slip-On by FMF ; Quiet innovation from FMF

Discover the ultimate innovation in quiet technology with the Q4 Slip-On Exhaust System by FMF. Designed for off-road enthusiasts, the Q4 combines complex chambers, advanced baffles and an exclusive multi-stage trim material to deliver unrivalled performance. Feel the discreet power of your engine with the Q4, the best-performing muffler on the market.

FEATURES

• Less sound equals more ground
• Meets USFS and FIM World Enduro sound regulations
• Power gains throughout the entire rpm range
• Spark arrestor included
• Pounds lighter than stock
• Rugged design for off-road endurance
• Only US manufacturer to offer dedicated quiet exhaust systems
• Made in the USA
• Compatible with FMF or stock header

Compatibility

045667

• Beta RR 350/390/430/480 - 20-23 

045646

• Gas Gas EC250/350F - 21 
• Husqvarna FE 250/450 - 20-22
• KTM 350/500 XCF-W - 20-22 

045627

• Gas Gas EX250/350/450F - 21-23 
• Gas Gas MC250/450F - 21-23 
• Husqvarna FC 250/350/450 - 19-22 
• Husqvarna FX 350/450 - 19-22 
• KTM 250 SX-F/SX-F FE/XC-F - 18-22 
• KTM 450 SX-F/SX-F FE/XC-F - 18-22 

041609

• Honda CRF250R - 22 

041601

• Honda CRF450R/RX - 21-23 

041578

• Honda CRF450X - 19-20 

041597

• Honda XR650L - 93-09, 12-20 

• KTM 250/350/450 SX-F - 16 

045590

• Husqvarna FC250-450 - 16-17
• Husqvarna FX/FE250-501-17 

042393

• Kawasaki KX250F - 21 

043377

• Kawasaki KLX400SR - 03-04 
• Suzuki DR-Z400 - 06-07
• Suzuki DR-Z400S - 00-20
• Suzuki DR-Z400SM - 05-20

042368

• Kawasaki KX450F - 19-20

043380

• Suzuki DR650SE - 97-20

044472

• Yamaha WR250F - 20-21 

044426

• Yamaha YZ250F - 14-17
• Yamaha YZ250FX - 15-18 

044452

• Yamaha YZ250F - 19-20 

044442

• Yamaha YZ450F - 18-22