Athena S4C05400010A Cast Lite Piston Kit (A) - Standard Bore 53.94mm electrical-batteries-components 1973-1977 Kawasaki KZ900/Z1

1973-1977 Kawasaki KZ900/Z1

Equipped with short back with a large stretch panel

F direct heat

2021-2023 Yamaha WR450F

1994-1995 KTM 440 EXC

Athena S4C05400010A Cast Lite Piston Kit (A) - Standard Bore 53.94mm electrical-batteries-components 1973-1977 Kawasaki KZ900/Z1Bore: 53. 94mm Sizing: Standard Bore For use with cylinder kit PN#: 0931 0012. 2 stroke pistons are made from 4032 silicium. Both include 3% copper in materials for better heat resistance. All pistons are forged using a precision heat treatment process that allows for production tolerances of just . 005mm. Forged piston kits are available in A, B and C sizing. Forged piston tooling allows for the lightest available product. Kits include antiwear