906587 Repl. Evo B.T. cast piston. +.040"

This .040 inch oversize cast piston from MCS is designed for 1984 to 1999 1340cc Evolution Big Twin engines. It is a great choice for a stock-spec rebuild, offering the standard 8.5:1 compression ratio. These cast pistons are highly valued for their low expansion rates, which helps maintain consistent clearances during operation. The package includes one piston, a wrist pin, and two clips, though rings are not included and must be ordered separately. Given the nature of engine overhauls, it is crucial that a professional mechanic handles the installation and verifies all clearances. This piston offers a high-quality, cost-effective alternative to OEM forged components. OEM number 906587.