1 set of BMW M3 E36 S50B30 Turbo pistons. DP Engine Parts are manufactured in Greece to the highest standards, using the best materials available. Size: 86.5mm. 9.1:1 compression ratio. 1050hp power handling. For use with 86mm crank stroke and 142mm rod length. 21mm wrist pin diameter. Comes as a set of 6, with piston rings, wrist pins and circlips. We also supply conrods for these pistons. Custom parts can be designed for a one-off fee if it is something we haven't made before.