CP Piston & Ring Set for Toyota 1JZGTE/2JZGTE - Bore (86.5mm) - Size (+.5mm) - CR (10.0) Set of 6

This is a set of six forged pistons and matching rings from CP Pistons, specifically made for Toyota 1JZGTE and 2JZGTE engines. You get everything needed to outfit your engine with these upgraded pistons, including the pistons themselves and the rings that seal them against the cylinder walls. These pistons are designed for an 86.5mm bore and are a +0.5mm oversize, meaning they are intended for engines that have been bored out to this specific dimension. The compression ratio is set at 10.0:1, which is a common target for modified engines looking for a balance between power and pump gas drivability.

CP Pistons are well-known in the performance engine building world for their robust construction and attention to detail. These are forged from high-strength aluminum alloy, which is much stronger and more durable than cast aluminum. This strength is crucial for handling the increased cylinder pressures and temperatures found in performance applications, especially with forced induction like turbochargers or superchargers. The 86.5mm bore size and the +0.5mm oversize indicate these are meant for an engine that has already been machined to this larger diameter, often done during a rebuild to clean up cylinder walls or increase displacement. The 10.0:1 compression ratio is a solid choice for many builds, offering a noticeable bump in performance over stock while still being manageable with premium pump gas in many setups, though tuning is always essential.

When building a performance engine with these pistons, it's important to ensure all supporting components are up to the task. This includes proper cylinder head preparation, a suitable camshaft profile, and a robust engine management system for tuning. Because these are an oversize piston, the engine block will need to be professionally bored and honed to the exact 86.5mm dimension before installation. Always refer to the manufacturer's detailed installation instructions for precise clearances and procedures.