Gain throttle response and 1-2 HP on 800 models

Arctic Cat snowmobile engines

and go ride

Easily adjust without having to disassemble your clutch or remove weights

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Big Bore 900 Piston / Patriot 850 Category_Default Category/SLED/Big Bore Kits Gain throttle response and 1-2Wiseco 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