FMF Racing
Powercore 4 Slip-On Exhaust

Part Number: 044397
Fits: 2012-15 Yamaha WR450F

• Race Inspired for maximum power and torque through entire RPM range
• Aircraft-quality extruded aluminum canister with stainless steel components
• High quality internal packing material for maximum longevity
• Made in the USA

Race-inspired, price-point muffler made for maximum power output. When designing the PowerCore 4 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.​​