Manley Subaru 2.5L EJ257 WRX STi Piston Set - 99.50mm Bore 1.209in CH, -10.00 CC

This is a set of four Manley Performance "Platinum Series" forged pistons for the Subaru 2.5L EJ257 engine, commonly found in WRX STi models. These pistons are designed for a 99.50mm bore and feature a compression height of 1.209 inches with a dish volume of -10.00cc. If you're rebuilding the top end of your EJ257, especially for performance applications, these pistons are built to handle the demands.

Manley uses domestic 2618 alloy forgings, which are known for their strength and ability to withstand high cylinder pressures and temperatures. The pistons feature proven cam and barrel skirt profiles, designed to generate power while minimizing wear on your cylinder walls. They also include exacting standards for ring lands and grooves, which helps ensure a better ring seal for improved power output. The included wrist pins are made from tool steel for added durability, and Manley's unique fixturing process ensures the ring grooves are perfectly square to the piston skirt.

This set includes four pistons, four tool steel wrist pins, and four sets of wrist pin retainers. Please note that these pistons are not CARB approved and cannot be shipped to California. It's always a good idea to consult your engine builder or a trusted mechanic for specific installation requirements and compatibility with your build.