PROX ΠΙΣΤΟΝΙ ΚΟΜΠΛΕ STD 82.00 KAWASAKI SXR 800 2003-2011, 13001-3735, 01.4523.000 ProX pistons are precision machined on the latest, state of the art CNC equipment. The same low-expansion, low-friction piston alloy is used as is used for all major Japanese engine manufacturers. ProX Piston Kit..