The CP Piston RB25DET 86.5/STD Stroke 8.5:1 is designed for high-performance RB25DET engines, offering an 86.5mm bore size for an exact fit and optimized combustion. With a compression ratio of 8.5:1, these pistons are ideal for high-boost forced induction applications, allowing for more aggressive boost levels while minimizing the risk of detonation. Made from forged aluminum, these pistons provide excellent strength, durability, and resistance to extreme heat and pressure, making them perfect for turbocharged setups and demanding performance environments. Precision-machined for consistent quality, they are well-suited for racing, drag racing, and other high-output builds.

Features

86.5mm Bore Size – Provides precise fitment and enhances combustion efficiency for the RB25DET engine.

Standard Stroke – Compatible with the standard RB25DET stroke for a balanced engine build.

8.5:1 Compression Ratio – Ideal for high-boost turbocharged setups, handling higher boost levels without detonation.

Forged Aluminum Construction – Offers superior strength, durability, and resistance to high temperatures and pressures.

Turbocharged Application Ready – Engineered to support the demands of forced induction systems.

Precision Machining – Ensures consistent performance and high-quality standards.

Perfect for High-Performance Builds – Suited for racing, track use, and other high-output applications.