FMF Powercore 4 Muffler YFZ 450 2004-2009, 2012-2015 044224 1831-0365 Ignition Circuit Breaker Studs Kit features a narrow-profile chrome

Kit features a narrow-profile chrome mounting bar and chrome bullet-style rear turn signals with amber lenses

Slightly raised design on back of mirror

500 rpm when tested on the in-house dyno against a Ninja H2 SX with a standard stock exhaust

Great for custom applications

FMF Powercore 4 Muffler YFZ 450 2004-2009, 2012-2015 044224 1831-0365 Ignition Circuit Breaker Studs Kit features a narrow-profile chromeFMF developed the PowerCore 4 to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is usable and compatible with every style of riding Aluminum construction and stainless steel Hi Flo endcaps make for the perfect balance of performance and strength Removable spark arrestor included