Fmf Racing 044426 Q4 Spark Arrestor Slip-On - Hexagonal Muffler - Stainless Midpipe helmets-helmet-accessories-replacement-parts-accessories There are two extractor vents

There are two extractor vents located under the rear spoiler for effective hot air extraction

2008-2009 Polaris Sportsman 800 EFI Touring

Comes with the quality

The end result is a quality muffler with improved torque

1982-1983 Harley Davidson FXR Super Glide II

Fmf Racing 044426 Q4 Spark Arrestor Slip-On - Hexagonal Muffler - Stainless Midpipe helmets-helmet-accessories-replacement-parts-accessories There are two extractor ventsMaterial: Stainless Steel Developed over years of championship offroad racing. Max sound output 96dB; most models below 94dB. Use with stock or FMF header. Constructed from aircraft grade aluminum and high strength stainless steel. Vehicle Fitment: 2015 2019 Yamaha WR250F 2014 2018 Yamaha YZ250F 2015 2019 Yamaha YZ250FX