Manley 90-94 Eclipse (6 Bolt 4G63T) 85.5mm +.5mm Bore 8.5 CR Dish Extreme Duty Pistons w/ Rings

If you're rebuilding the engine in your 1990-1994 Mitsubishi Eclipse with the 6-bolt 4G63T engine, these Manley Extreme Duty pistons are a solid choice for serious performance. These pistons are specifically sized at 85.5mm with a +.5mm bore, and they feature an 8.5:1 compression ratio dish, designed to handle the demands of a performance-oriented build.

Manley uses domestic 2618 alloy forgings for these pistons, which are known for their superior strength and ability to withstand high temperatures and pressures. They also feature proven cam and barrel skirt profiles that help reduce friction and wear on your cylinder walls while still allowing the engine to make substantial power. The ring lands and grooves are machined to exacting standards, which is crucial for getting a good seal from your piston rings, leading to more efficient combustion and better power output. You'll also find premium chrome moly wrist pins included, adding to the overall durability of the assembly.

These pistons are part of Manley's "Platinum Series," a popular choice among professional engine builders and tuners who need reliable components for high-performance applications. It's important to note that these pistons are not CARB approved and cannot be shipped to California. You'll want to refer to the manufacturer's installation instructions for specific details regarding ring gap, piston-to-wall clearance, and wrist pin installation.