CP Piston & Ring Set Mazda MZR 2.3L - Bore (88mm) - Size (+0.5mm) - CR (8.5) - Set of 4 (No Cancel)

This is a set of four CP Pistons SC7535-4 forged pistons, complete with rings, designed for Mazda MZR 2.3L engines. These pistons are 0.5mm oversize from the standard bore, measuring 88mm, and feature a compression ratio of 8.5:1. This specific setup is intended for builders looking to refresh or upgrade their MZR engine with robust, high-performance components.

CP Pistons are well-known for their strength and durability, making them a popular choice for performance builds. These pistons are forged from high-strength aluminum alloy, which can withstand higher cylinder pressures and temperatures compared to cast pistons. The 8.5:1 compression ratio is a notable figure, suggesting these are well-suited for applications where forced induction, like turbocharging or supercharging, is planned, or for naturally aspirated builds seeking a balance between power and pump gas compatibility. The 0.5mm oversize bore means these are intended for engines that have already been bored out to this dimension, typically during a rebuild to clean up cylinder walls or achieve a specific displacement.

When rebuilding an engine with these pistons, it's important to ensure all supporting components are up to the task. This includes proper balancing of rotating assemblies, appropriate camshafts, and a well-tuned fuel and ignition system to take advantage of the improved airflow and combustion characteristics. Remember that this set is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's detailed installation instructions for precise clearances and assembly procedures.