Carefully developed for the highest level of qualityUnsurpassed in functionality and reliabilityReady to serve reliably for years to come Forged Top-End Repair Kit (FX-10039-CK) by Namura Technologies Inc.. Piston size: 76.82 mm. Oversize: +0.02. With Forged piston. Quality materials mean increased longevity and continued performance. A critical aspect of any rebuild, gaskets are often given little thought. However, the right materials can make all the difference. PistonRingsWrist pinClipsTopend bearingGasket kit .