Straightline Performance Y-PIPE for Ski-doo REV GEN4 850 ETEC shows a nice gain in power for a very wide rpm band.
Different runner length, diameter, and no dimples have made gains of 5 hp at Dynotech Research so this isn't a bad spend for a little performance. Check out our Hot Rod Sled Shop Ported 850 ETEC numbers soon with this y-pipe also. Available in black painted or silver ceramic, you can pick your preferred poison. Get a set of our exhaust gaskets or you will wish you did--see the "engine parts" section or somewhere below on this page!