JE Pistons Nissan RB25DET 86.50mm Bore 0.827in Pin Dia 8.5:1 CR - Set of 6

Forged in the USA from 2618 aluminum, these JE Pistons are built to handle the demands of a performance Nissan RB25DET engine. The 86.50mm bore size and 8.5:1 compression ratio are specifically chosen to optimize power and durability for this engine. JE Pistons brings over 75 years of experience to the table, ensuring that each piston is designed for its specific application, whether it's for track use or street performance.

A key feature is the proprietary Forged Side Relief (FSR) forging design. This design uses a reduced skirt width and a shorter wrist pin to minimize friction and power loss, while also saving weight. Depending on the specific application, these pistons may also include an accumulator groove to help reduce combustion gas pressure, which can prevent ring flutter and improve ring seal for more consistent power delivery. Some applications also feature a skirt coating that further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation and longer life.

This set includes six pistons, each designed for the RB25DET engine. You'll also find high-quality wrist pins, locks, and JE Pro Seal premium piston rings included, making this a comprehensive kit for your engine build. These pistons are made 100% in the USA, ensuring a high standard of manufacturing and material quality.