Big Bore 900 Piston / Patriot 850 Category_Default Category/SLED/Ski-Doo/GEN5 850 E-Tec Turbo-summit ****For models which need the

****For models which need the shim under bucket conversion we highly recommend having us install the cams and/or springs

22UP MATRYX BOOST STAGE 3 +35HP 50% RACE AND 91 OCTANE v1 NO BREAK IN

and affordable price

featuring a proven and reliable TEAM Tied Secondary Clutch for anyone stuck with the stock secondary clutch and looking for a new level of performance and consistency

providing a significantly smoother shift curve and more consistent performance

Big Bore 900 Piston / Patriot 850 Category_Default Category/SLED/Ski-Doo/GEN5 850 E-Tec Turbo-summit ****For models which need theWiseco 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