Manley 100mm (+.5mm) Overbore Pistons Subaru WRX 2006-2014 / STI 2004-2021 | 612005C-4

Part #: 612005C - 4. Manley's forged and dished pistons for the EJ257 are crafted from high - strength 2618 material. They're lightweight but tough, offering a long service life. Each set comes with round wire locks, tool steel wrist pins, and piston rings at no extra cost. A special multi - step top ring groove machining process ensures perfect control of the groove's size, shape, flatness, and finish. Precise pinhole machining guarantees an accurate compression distance and exact lock ring groove spacing, size, and concentricity. Available in standard size and various oversize/overbore options for high - performance engine builds. All Manley pistons include a full set of four pistons, piston rings, and hardware. Fitment: Subaru STI 04+, 06+ WRX. Part Number: 612005C - 4(100mm (+.5mm) Overbore, 8.5 Comp. Ratio)

These Manley pistons are a great addition to your Subaru engine. To use them, first make sure your engine is compatible with the piston size and compression ratio. During installation, carefully place the pistons in the cylinders, ensuring the round wire locks, tool steel wrist pins, and piston rings are correctly installed. When operating your vehicle, keep an eye on the engine temperature and performance. For maintenance, regularly check the pistons and related components for wear and tear. If you notice any issues, replace the parts promptly. Also, make sure to follow the general engine maintenance schedule for your Subaru. Remember, these pistons come with a full set of four pistons, piston rings, and hardware, so you have everything you need for a smooth installation and operation.