Stack of the 1st seven sets. These are all spoken for not stock.
1 boxed set open
the boxes of rings and tool steel pins opened
bottom/inside of piston note the holes that allow the oil from the oil control rings to pass through--obviously much stronger than the factory slots which were prone to failure.
note the grooves for the Subaru Tru Arc pinston pin circlips
note the the oil dispersion grooves on the pin oilers
note the deep valve reliefs which maintain zero interference with high lift camsafts
note the symetry of the piston top
note the flat top matching the cyllinder head squish area
note the anti detonation grooves
note the deep ring placement
note the latteral gas porting on the top compression ring
