JE Pistons 84mm Bore 9.5:1 Compression Piston Set of 6 Fits BMW N55B30

Description

The JE Pistons BMW N55B30 Piston Set is a high-performance solution designed for the BMW N55B30 engine. With an 84mm (3.307″) bore and a 9.5:1 compression ratio, these pistons feature a -14.7cc inverted dome/dish design, making them ideal for demanding performance and racing applications. Crafted from 2618 aluminum for exceptional tensile strength, these pistons utilize JE’s proprietary Forged Side Relief (FSR) technology, which reduces friction and power loss by minimizing skirt width and optimizing weight with a shorter wrist pin. Additional features include a skirt coating that lowers friction, reduces wear, and minimizes operating noise, as well as an accumulator groove to improve ring seal and maintain consistent power output. This set includes six pistons, high-quality wrist pins, locks, and JE Pro Seal premium piston rings, offering a complete solution for engine builds. These pistons are engineered with precision for durability and performance, making them suitable for a wide range of applications, from drift racing to drag racing.