Wiseco K573M86AP +8cc Strutted Forged Piston Kit (86 mm) for Honda/Acura K20

Fitment

• Honda / Acura K-series 2.0L engines: K20A, K20Z
• Common applications: RSX (2002-2006), Civic Si, and other K20 builds

Features

• Forged 2618 aluminum construction for maximum strength
• Strutted forging design for enhanced load resistance
• +8 cc dome pistons for optimized compression
• ArmorGlide®/ArmorPlating skirt coating reduces friction and wear
• Precision-machined ring grooves and anti-detonation groove
• Forced pin oiling for improved lubrication and reliability
• Includes piston rings, wrist pins, and locks
• Designed for heavy-duty performance and racing applications

Specifications

• Bore: 86.00 mm
• Compression Height: 30.00 mm
• Dome Volume: 8.0 cc
• Compression Ratio: ~11.7:1
• Wrist Pin Diameter: 22.00 mm
• Material: Forged 2618 aluminum
• Ring Set: Included
• Weight: ~320 g per piston

Included Components

• 4x Forged pistons
• 4x Wrist pins
• 4x Pin locks (circlips)
• 4x Ring sets
• Specification / installation guide

Product Description

The Wiseco K573M86AP is a high-performance forged piston kit engineered for K-series 2.0L engines such as the Honda/Acura K20A and K20Z. Constructed from 2618 aluminum, these pistons are built to handle high RPM, boost, and demanding performance conditions.

The strutted forging design with +8 cc dome provides optimized compression for efficient combustion and improved quench. The coated skirts reduce friction, increase wear resistance, and ensure a precise fit in the bore. Forced pin oiling enhances lubrication, making the setup more reliable under heavy-duty use.

This complete kit includes pistons, rings, wrist pins, and locks, making it ideal for engine rebuilds or high-performance builds on K20-powered vehicles like the RSX, Civic Si, or other tuned K-series platforms.