What material are these pistons made from?

These pistons are forged from 2618 aluminum, which is known for its improved tensile strength. They are then machined in the USA.

What is the purpose of the ArmorGlide skirt coating?

The ArmorGlide coating on the piston skirts helps to reduce friction, resist seizure, and contribute to quieter operation of the engine.

Are these pistons compatible with all K20A engines?

This specific piston set is designed for the 2002-2006 Acura RSX K20A engine. It's important to verify fitment for your specific application, as bore size and other dimensions are critical.

Wiseco Honda K-Series +10.5cc Dome 1.181X86.5mm Piston Shelf Stock Kit

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Specifications

Brand: Wiseco
Part #: K650M865
UPC: 193564448149

Wiseco Honda K-Series +10.5cc Dome 1.181X86.5mm Piston Shelf Stock Kit

Name: Wiseco Honda K-Series +10.5cc Dome 1.181X86.5mm Piston Shelf Stock Kit
Brand: Wiseco
Price: 697.99 USD
Availability: InStock

$697.99

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2002-2006 Acura RSX. Wiseco forged piston set built for severe duty race builds.

Key Features

Fits 2002-2006 Acura RSX.
Forged and machined in the USA from 2618 aluminum for improved tensile strength.
Features precision ring grooves, anti-detonation groove, and additional ring seal improvements.
ArmorGlide skirt coating reduces friction, resists seizure, and quiets operation.
Designed and built to withstand heavy to severe duty performance applications.
Fully machined crown and forced pin oiling.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits this vehicle

Acura RSX 2002-2006

Product Details

Wiseco is well-known for making strong internal engine components, especially for performance applications. This Professional Series piston set is a prime example, designed for the serious racer or builder who needs parts that can handle extreme conditions. If you're rebuilding the engine in your 2002-2006 Acura RSX for heavy or severe duty race use, these pistons are built to take that kind of punishment.

These pistons are forged and machined right here in the USA from 2618 aluminum, which gives them improved tensile strength for high-stress situations. They feature precision ring grooves, an anti-detonation groove, and other features designed to improve ring seal. The crown is fully machined, and they also come with forced pin oiling to keep things well-lubricated. Plus, they have an ArmorGlide skirt coating that helps reduce friction, resist seizure, and operate more quietly.

This kit includes four pistons, each with an 86.50 mm bore and a +10.5cc dome volume. The compression height is 30.00 mm, and they use a 0.8661 inch pin diameter. Keep in mind that these are not CARB approved and cannot be shipped to California.