Arctic Cat snowmobile engines

This does not pertain to vehicles already exempted and labeled as competition-only vehicles from the factory

or often use it for different purposes

We have developed what we believe is a far superior adjust-ability giving you the best performance possible for your application

Gain throttle response and 1-2 HP on 800 models

Big Bore 900 Piston / Patriot 850 Category_Default Category/SLED/Big Bore Kits Arctic Cat snowmobile enginesWiseco 900 Big Bore Piston and Factory 9R Piston Direct replacement for our 900 Patriot Big Bore Choose between forged or Cast Piston If you are refreshing your top end select QTY 2 IF YOU HAVE OUR BIG BORE PLEASE SELECT THE SAME PISTON THAT WAS IN YOUR KIT ORGINALY. THEY ARE DIFFERENT SIZES AND YOU CAN NOT SWAP BETWEEN THE TWO TYPES. WISECO AND FACTORY 9R