FMF PowerCore 4 Slip-On Muffler — Yamaha YFZ450 2004–2015

A straightforward way to pick up power and shed weight — bolts to your stock or FMF header and delivers the throttle response this platform is capable of.

Fits: Yamaha YFZ450 2004–2015.

Why riders pick it:

• Value-priced way to add real power and drop weight over the stock muffler
• Hi-flow core wakes up throttle response across the rev range
• Straightforward bolt-on upgrade for riders stepping into aftermarket exhaust for the first time
• Direct bolt-on installation, no tuning required

⚠️ For closed-course competition / off-road use only — not legal for street use in some states. Confirm your local regulations.

Not sure it fits your bike? Send us your year and model and we'll confirm.