CP Piston & Ring Set for Nissan RB25DET - Bore (86mm) - Size (STD) - Compression Ratio (8.5)

Forged from high-strength 2618-T61 aluminum, these CP Pistons are built to handle the demands of a performance Nissan RB25DET engine. The 86mm bore and standard size mean they're ready to drop into a freshly machined block, and the 8.5:1 compression ratio is a solid choice for boosted applications where you need reliable power without excessive detonation risk. This set is designed for engines that are pushed beyond their original limits, offering a durable foundation for serious builds.

CP Pistons uses a specialized forging process that creates a piston with superior strength and fatigue resistance compared to cast or hypereutectic pistons. This is crucial for engines that see high cylinder pressures and temperatures, common in modified RB25DETs. The set includes the pistons and rings, making it a convenient package for engine builders. Remember that these pistons are not CARB approved and cannot be shipped to California.

When rebuilding or upgrading your RB25DET, using well-built internal components like these CP Pistons is key to achieving your performance goals and ensuring long-term reliability. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.