Manley Chevrolet LS Piston Set - 4.135in Bore 1.115in CH, -18.00 CC

Manley Performance is well-known for building robust engine components, and their LS piston sets are a prime example of that commitment. If you're building a high-performance Chevrolet LS engine, these pistons are designed to handle serious power. They feature a 4.135-inch bore and a -18.00 CC dish, which is a common configuration for many naturally aspirated and forced induction LS builds. The 1.115-inch compression height is also a key measurement that works with many popular crankshafts and connecting rods to achieve desired compression ratios.

What sets these pistons apart is the material and the manufacturing process. They are forged from domestic 2618 alloy, a material known for its exceptional strength and ability to withstand high temperatures and pressures without deforming. This is crucial for performance engines where detonation or excessive cylinder pressures can be a concern. Manley also uses proven cam and barrel skirt profiles, which help the piston move smoothly in the cylinder bore, reducing friction and wear on the cylinder walls while still allowing for substantial power gains. The ring lands and grooves are machined to very strict standards, ensuring a tight seal with your piston rings, which is vital for both power and oil control.

Included with these pistons are premium chrome moly wrist pins. For those looking for even more durability, Manley offers upgrades to 9310 or Turbo Tuff/DLC alloys. Manley's unique fixturing process allows them to machine the skirt and ring grooves in a single operation, which guarantees the squareness of the ring grooves relative to the piston skirt. This attention to detail ensures optimal ring seal and contributes to the overall longevity and performance of your engine. Please note that these pistons are not CARB approved and cannot be shipped to California.