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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15
• May require belt or chain tensioner on some applications
allowing us to add up to 6 additional frictions disks to the clutch pack over stock
• Can be fitted to any Jacket inside the back protector pocket
* Spacer made for Snug Fit over a 5/16in
• Replaces OEM # 17397-57A
FMF Racing Q4 Hex Aluminum Slip-On Muffler w/Stainless End Cap for Beta 350RR/390RR/430RR/480RR 20-25 • May require belt orFMF is the leader in high performance quiet technology and our Q4 HEX is the next evolution in off road exhaust. The Q4 employs intricate chambers, baffles and proprietary multistage packing material making it the best performing quiet muffler available. With the Q4 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 entire rpm range Spark