Manley Subaru 2.5L EJ257 WRX STi Piston Set - 99.75mm Bore 1.130in CH, -26.00 CC

If you're rebuilding the engine in your Subaru WRX STi with the 2.5L EJ257 engine, a set of high-performance pistons is crucial for handling increased power. Manley's Platinum Series pistons are built for just that, offering a well-built foundation for your performance engine build. These pistons feature a 99.75mm bore, which is a common size for engine rebuilds, and a compression height of 1.130 inches with a -26.00cc dish volume, designed to work with specific cylinder head combinations.

Manley uses domestic 2618 alloy forgings for these pistons, a material known for its exceptional strength and ability to withstand the demands of performance engines. They also feature proven cam and barrel skirt profiles, which help generate power while being easier on your cylinder walls during operation. The ring lands and grooves are machined to strict standards, which is key for ensuring a good seal with your piston rings and ultimately making more power. Each set includes premium Chrome Moly wrist pins, and Manley's unique fixturing process ensures the ring grooves are perfectly square to the piston skirt for optimal performance.

This piston set is a popular choice among professional engine builders and tuners who rely on Manley for durable, high-performing engine components. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For a complete build, you'll want to ensure you have the correct piston rings and connecting rods to match these pistons.