Z400 LTZ400 LTZ 400 CP Kibblewhite 470cc Big Bore Stroker Kit NEW 94mm cylinder works on all years and models 12.5:1 forged CP piston with rings, pin, and clips uses pump or race gas Hotrods +4mm stroker crank with Hotrods main bearings Kibblewhite Black Diamond valves and lightweight spring kit Hotcams Stage 2 cams with chain - Complete gasket and seal kit