Manley 90-94 Eclipse (6 Bolt 4G63T) 85.5mm +.5mm Oversized Bore 8.5:1 Dish Pistons w/ Rings

Manley Performance is well-known for building strong engine components that professional builders trust. If you're working on the 4G63T engine in your 1990-1993 Eagle Talon, Mitsubishi Eclipse, or Plymouth Laser, these forged pistons are a solid choice for a rebuild or performance upgrade. They feature an 8.5:1 dish volume, which is a common compression ratio for boosted applications, helping to keep detonation at bay while still making good power.

These pistons are made from domestic 2618 alloy forgings, a material chosen for its strength and ability to handle the stresses of a high-performance engine. Manley also uses proven cam and barrel skirt profiles, which help the piston move smoothly in the cylinder bore, reducing wear on the cylinder walls. The ring lands and grooves are machined to strict standards to ensure a good seal with the piston rings, which is crucial for both power and oil control. The included wrist pins are made from premium chrome moly steel for added durability.

This set is specifically sized at 85.5mm, which is 0.5mm oversized from the standard bore. This is important to note if you are re-boring your cylinders, as you'll need to match this size. They come complete with piston rings, ready for installation.