Manley Chevrolet Small Block Piston Set - 4.040in Bore 1.125in CH, -2.50 CC

Starting with domestic 2618 alloy forgings, these Manley pistons are built for serious performance in Chevrolet Small Block engines. The 4.040-inch bore size and 1.125-inch compression height are key dimensions for many popular engine builds, and the -2.50 CC dish volume helps achieve specific compression ratios when paired with the right cylinder heads and gasket combination.

Manley's signature cam and barrel skirt profiles are designed to reduce friction and wear on your cylinder walls while still generating substantial power. They've also paid close attention to the ring lands and grooves, holding them to strict standards to ensure an enhanced ring seal, which translates directly to more power output. The included chrome moly wrist pins are well-built for durability, and Manley's unique manufacturing process ensures the ring grooves are perfectly square to the piston skirt for optimal performance.

This set is a solid choice for engine builders looking for reliable, high-performance pistons. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.