AB-11319 or similar

FMF Beta 4-stroke RR|RR-S (20-on) Q4 Hex Slip-On


Regular price $449.99

The FMF Q has always been in a league of its own and our latest Q4 Hex is the most significant upgrade to date. You don't need to settle for a plugged up moto muffler hampered by an insert when you can have a compliant muffler engineered for performance.

-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 (94-96 dB with insert installed)
-Can be used with FMF or Stock OEM Header

Fits 2020-on 4-stroke RR/RR-S models. For Closed Course Competition Use Only. Not Intended for Street Use. Dimensional weight listed.

FMF Beta RR|RR-S (20-on) Q4 Hex Slip-On
Produced by FMF of USA

Customer Reviews

Based on 1 review
Jeremy Hafer
Nice slip on

Nice increase in power, much better sounding than stock. I changed rear blinkers to flush mount on 500 rrs, but didn't need to after receiving pipe. It has a little turn down same as factory exhaust at end of pipe, so stock blinkers would work with this slip on.