KNO61K13PP0 , PISTON ASSEMBLY, 92MM, STD., BA921/922, LP39XX, LK49XX, LK89XX, 360CC, 720CC PISTON ASSY. 92MM STD THRU +.060 2 X 2.50 MM COMPRESSION RING GROOVES 1 X 4.00 MM OIL CONTROL GROO…