CP Piston & Ring Set for Nissan RB25DET NEO - Bore (86.5mm) - Size (+0.5mm) - CR (9.0) - SINGLE

Forged from 2618-T61 aluminum, this CP Pistons set is built for the demands of a Nissan RB25DET NEO engine. The pistons are machined to an 86.5mm bore size, which is a +0.5mm oversize, meaning they're intended for engines that have been bored out to match this specification. This set is designed to achieve a 9.0:1 compression ratio, a common target for modified RB25DET builds looking for a balance between power and pump gas drivability.

CP Pistons uses a deep, single-valve relief design on these pistons. This specific relief pattern is crucial for proper valve-to-piston clearance, especially in performance applications where camshaft profiles might be more aggressive. The included rings are designed to seal effectively against the cylinder walls, helping to maintain compression and control oil consumption. This set is sold as a single piston and ring package, so be sure to order the correct quantity for your engine.

This piston set is not CARB approved and cannot be shipped to California. Always refer to your engine builder's recommendations and manufacturer specifications for proper installation and tuning.