The Yamaha Raptor 90 is available as a Full System in the Performance Series exhaust. The shell is a miniature version of the standard Performance and features an internal core that is sure to make the most of these smaller engines. There is typically a 10-15% horse power and torque increase on the Yamaha Raptor 90 and the sound level should be roughly 2-3dB louder than the stock muffler.Raptor 90 YFM90R DW

HMF Racing Blue Performance Full System Exhaust for Yamaha Raptor 90 09-14 End Cap- Stainless No Spark arrester
$74.78