JE Pistons BMW N55B30 84.5mm Bore -14.7cc Dome (Set of 6 Pistons)

If you're rebuilding the engine in your BMW N55B30 for serious performance, a strong set of pistons is crucial. JE Pistons has been making forged pistons for over 75 years, and this set is built specifically for your engine. They're forged from 2618 aluminum right here in the USA, which gives them the high tensile strength needed for demanding applications where stock pistons just won't cut it.

These pistons feature JE's proprietary Forged Side Relief (FSR) design, which helps reduce friction and skirt wear while saving weight. Depending on the specific application, they may also include an accumulator groove to help manage combustion gas pressure, improving ring seal and keeping power consistent. A skirt coating, if included for your application, further reduces friction and noise. This kit comes complete with high-quality wrist pins, locks, and JE Pro Seal premium piston rings, so you have everything you need to get your engine back together with a solid foundation.

Because these pistons are designed for high-performance use, they are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.