Works with BMP ECU tune motors only

The new design utilizes a captured pin with set screws for maximum durability and ease of use

Will not over-tighten and stays fixed

Factory Polaris uses the same muffler for both the 600 & 800

When used in conjunction with our Performance Manifold

Pistons 900 / Engine Tech Category_Default Category/SLED Works with BMP ECU tuneHaving trouble finding pistons for your ET 900 motor? We have your answer! We went out of our way to make pistons for this motor so you aren't left in the dark. Pistons are made . 020" oversize to compensate for motors that need boring. Made by Wossner pistons of Germany, expect exceptional quality!