32:[["350 RR",{"years":[2025,2024,2023,2020],"rideType":"Dirt Bikes"}],["350 RR Race",{"years":[2025],"rideType":"Dirt Bikes"}],["350 RR Race Edition",{"years":[2025,2024,2023,2022,2021],"rideType":"Dirt Bikes"}],["350 RR X-Pro",{"years":[2025],"rideType":"Dirt Bikes"}],["390 RR",{"years":[2025,2024,2023],"rideType":"Dirt Bikes"}],["390 RR Race",{"years":[2025],"rideType":"Dirt Bikes"}],["390 RR Race Edition",{"years":[2025,2024,2023,2022,2021,2020],"rideType":"Dirt Bikes"}],["390 RR X-Pro",{"years":[2025],"rideType":"Dirt Bikes"}],["430 RR",{"years":[2025,2024,2023],"rideType":"Dirt Bikes"}],["430 RR Race",{"years":[2025],"rideType":"Dirt Bikes"}],["430 RR Race Edition",{"years":[2025,2024,2023,2022,2021,2020],"rideType":"Dirt Bikes"}],["430 RR X-Pro",{"years":[2025],"rideType":"Dirt Bikes"}],["480 RR",{"years":[2025,2024,2023],"rideType":"Dirt Bikes"}],["480 RR Race",{"years":[2025],"rideType":"Dirt Bikes"}],["480 RR Race Edition",{"years":[2025,2024,2023,2022,2021,2020],"rideType":"Dirt Bikes"}],["480 RR X-Pro",{"years":[2025],"rideType":"Dirt Bikes"}]] 31:[["Beta","$Q32"]] 33:T521,

FMF PowerCore 4 HEX Slip-On Exhaust Beta 350 RR / 390 RR / 430 RR / 480 RR

When designing the PowerCore 4 HEX Exhaust, FMF took a hard look at their top of the line mufflers to produce race-inspired performance at a more economical price. The end result is a quality muffler that delivers improved torque, increased horsepower and rugged durability all at a price that won't break the bank.

Features:

Increase in power and torque through entire RPM range
Durable stainless steel and aluminum construction
High quality internal packing material for maximum longevity
Internal shape of the core utilizes Hi-Flo technology
Enhanced sonic evacuation provides higher flow and increased power
Removable spark arrestor included
Can be used with FMF or Stock OEM Header
Weight: 6.2 lbs
100% made in the USA

Note: Images are for reference only, actual product may vary.