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22UP MATRYX BOOST STAGE 4 HILL CLIMB RACE+50HP 110 OCTANE v1 NO BREAK IN
These washers are stacked inside the spring cup and allow free movement of the flat side of the spring
Heavy Pin Kit Instructions
Sheds 1 pound
The larger volume works very well with higher boost pressures as the air does not bottleneck and create heat
Big Bore 900 Piston / Patriot 850 ptbct 22UP MATRYX BOOST STAGE 4Wiseco 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
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