Wiseco GM ECOTEC Dished 8.9:1 CR 86.5 Piston Shelf Stock Kit

Wiseco is known for making tough, reliable internal engine components, and their Professional Series forged pistons are a prime example. If you're building a GM Ecotec engine for serious performance, these pistons are designed to handle the stress of heavy to severe duty applications. They feature a dished crown to achieve a specific 8.9:1 compression ratio, making them a solid choice for boosted or high-performance naturally aspirated builds.

These pistons are forged and machined in the USA from 2618 aluminum, which offers improved tensile strength for durability under extreme conditions. You'll find precision ring grooves, anti-detonation grooves, and other features aimed at improving ring seal and preventing detonation. They also come with an ArmorGlide skirt coating that helps reduce friction, resist seizure, and operate more quietly. The fully machined crown and forced pin oiling further contribute to their robust design, ensuring they can withstand the demands of racing and high-performance street use.

This kit includes four pistons, ready to be installed in a range of GM Ecotec engines found in vehicles like the Chevrolet Cobalt, Pontiac G5, and Saturn Vue. Remember 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.