The 88mm Piston kit is a perfect piston for limited or mildly modified MPE-750 engines. The piston is forged & gas ported for extra durability and better ring sealing. The 9.0-1 Compression Ratio is the same as OEM and should not require major map file changes. It is compatible with the OEM ECU, but will require high quality 98+ octane fuel. For higher horsepower engines (160+), we recommend our high performance piston kits; http://www.weberpower.com/parts-weber-piston-kits.html NOTE:This is for (1) Piston assembly only; you must order (2) to rebuild an engine. Available from Weberpower.com with part number WE-88X at the cost of $209.99. Photo courtesy: Weberpower.com
