Bikeman Performance Billet Head Kit – Low Altitude – Matryx 9R – Polaris 04-318-L-900

Increase cooling capacity for lower running temps which helps maintain peak power. The low altitude kit gains 4-5 horsepower mid-range and peak horsepower. For sea level to 6000 foot altitude.. Tune is requried for the 9R.. 91 pump gas is required.. BPR9ES