Manley 15+ Subaru FA20 WRX 86.25mm +.25mm Over Size Bore 10:1 Dish Piston Set with Rings

Manley Performance is well-known for building strong engine components that serious builders trust. If you're rebuilding the engine in your 2015 and newer Subaru FA20 WRX, this set of forged pistons is a solid choice for enhanced performance and durability. These pistons are 0.25mm over the standard bore size, measuring 86.25mm, and feature a dish design that results in a 10:1 compression ratio, making them suitable for a wide range of performance applications.

These aren't just any pistons; they're crafted from domestic 2618 alloy forgings, which Manley uses because it offers superior strength and performance compared to other materials. The pistons feature proven cam and barrel skirt profiles, designed to generate power efficiently while also being gentle on your cylinder walls during operation. Manley also pays close attention to the details, ensuring exacting standards for the ring lands and grooves. This precise machining helps achieve a better ring seal, which translates directly to more power and better engine efficiency. The included wrist pins are made from premium chrome moly for added durability.

What sets Manley apart is their unique fixturing process. It allows them to machine the skirt and the ring grooves in a single operation. This ensures the ring grooves are perfectly square to the piston skirt, a critical detail for proper ring seal and long-term reliability. This set comes complete with rings, ready for installation by a professional engine builder or a dedicated enthusiast looking to get the most out of their Subaru's engine.