Wiseco BMW S14B23 94.00 mm Bore 30.22 mm CH -6.00 CC Piston Set

If you're rebuilding the engine for your 1988-1991 BMW M3, especially for racing or heavy-duty use, this Wiseco piston set is a solid choice. These are forged pistons, meaning they start as a block of 2618 aluminum that's heated and hammered into shape, giving them improved tensile strength over cast pistons. This makes them well-suited for the demands of performance builds where reliability under stress is key.

Wiseco machines these pistons right here in the USA. You'll find precision ring grooves, anti-detonation grooves, and other features designed to improve ring seal and keep combustion contained. The piston crown is fully machined for accuracy, and they even include forced pin oiling to ensure the wrist pin stays well-lubricated. Plus, the ArmorGlide skirt coating helps reduce friction and noise, and makes them more resistant to seizing, which is a big plus when you're pushing the engine hard.

This set is designed for severe duty performance applications. It's important to note that these pistons are not CARB approved and cannot be shipped to California. For serious builders, this set offers a well-built foundation for a high-performance S14B23 engine.