CP Piston & Ring Set Bore 100mm Size +0.5mm CR 10:1 WRX / STI Subaru EJ25 Turbo Models 2004-2021

Part #: SC7417. CP's forged pistons for WRX and STI models offer excellent ring seal, higher vacuum, and less blow - by. They're incredibly durable and can boost horsepower and torque across the power band. The peak horsepower stays consistent throughout the life of the piston rings. This is thanks to the lightweight forgings and CP's unique machining methods. CP is deeply involved in racing, and this dedication shows in every piston they make. They use the latest forging techniques and CNC machinery, and their strict quality control ensures a top - class product that focuses on performance and reliability. CP has some of the highest quality control standards in the industry. As a part of Pankl Racing Systems, they supply engine and suspension parts to top racing teams and elite brands like Ferrari and Porsche. You won't find a better piston for your EJ20 or EJ257.

Using this CP piston and ring set is straightforward. First, make sure your engine is clean and free of any debris before installation. When installing the pistons, follow the manufacturer's guidelines carefully for proper alignment. As for maintenance, it's a good idea to regularly check the ring seal and piston condition. You can do this during routine engine inspections. Keep an eye out for any signs of wear or damage. If you notice anything unusual, it might be time to replace the parts. Also, use high - quality engine oil to ensure smooth operation and longevity of the pistons and rings. Remember, proper installation and maintenance will help you get the most out of your CP piston and ring set.