Manley Chevrolet LS Piston Set - 4.185in Bore 1.115in CH, -11.00 CC

If you're building a high-performance Chevrolet LS engine, a strong set of pistons is fundamental to achieving your power goals and ensuring long-term reliability. These Manley Performance pistons are forged from a domestic 2618 alloy, a material known for its exceptional strength and ability to withstand the high pressures and temperatures found in performance applications. They are designed with proven cam and barrel skirt profiles, which help generate significant power while also being gentle on your cylinder walls, reducing wear over time.

Manley takes a meticulous approach to machining these pistons. They adhere to strict standards for the ring lands and grooves, which is crucial for achieving a solid ring seal. A good ring seal means more consistent compression and ultimately, more power. The unique fixturing Manley uses 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, which is vital for proper ring function and sealing under load. These pistons also come with premium chrome moly wrist pins, offering solid durability for most performance builds.

This set is specifically for a 4.185-inch bore with a 1.115-inch compression height and a -11.00 CC dish volume, making them suitable for specific compression ratio targets in your LS engine build. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. They are a popular choice among professional engine builders and tuners who demand reliable performance from their components.