Top-end Kit includes: 2 SBT Pistons 2 Ring Sets 2 Wrist-Pins 2 Wrist-Pin Bearings 2 C-Clips 1 Base Gasket 1982-1990 1 Head Gasket 1982-1990 Exhaust Gasket(s). This top end kit will not work on reed port motors 1991-1995, it is a replacement for the piston port motors from 1982-1990