Wiseco K567M845AP Forged 84.5 mm +2 cc Dome Pistons for Honda B-Series

Vehicle Fitment

• Honda B16A (Civic Si, 1993-2001)
• Honda B18C (Integra GS-R, etc.)
• Honda B20B (with VTEC head, e.g. CR-V 1997-2002)

Features

• Forged from 2618 aerospace-grade aluminum for high strength
• ArmorGlide® skirt coating for reduced friction and improved durability
• +2 cc positive dome to raise compression
• Strutted forging structure for added rigidity under load
• Forced-pin oiling for better lubrication at high RPM
• CNC-machined crown with optimized ring grooves and anti-detonation design
• Includes high-performance piston ring set
• Floating 21 mm wrist pin for strong and stable connection

Specifications

• Bore: 84.50 mm
• Compression Height: 30.00 mm
• Dome Volume: +2.0 cc
• Wrist Pin Diameter: 21 mm
• Piston Material: Forged 2618 aluminum
• Piston Type: Positive dome, strutted
• Estimated Piston Weight: ~294 g each
• Ring Set: Included (8450XX style)

Included Components

• 4x forged pistons (84.5 mm, +2 cc dome)
• 4x 21 mm floating wrist pins
• 4x circlips / locks for the wrist pins
• 4x performance piston ring sets

Product Description

The Wiseco K567M845AP piston kit is a high-performance forged set designed for Honda B-series engines, including B16A, B18C, and B20B with a VTEC head. With a +2 cc dome, these pistons provide a moderate compression boost without making compression excessively high for street or track use.

Made from 2618 alloy, these pistons deliver excellent strength and thermal stability. The ArmorGlide coating on the skirts helps minimize friction and resist seizure under load, while the strutted forging design ensures structural rigidity in high-stress conditions. The kit includes a matched high-performance ring set and 21 mm floating wrist pins for secure and efficient operation.

Installation requires measuring bore clearance, ring gap, and deck height. Because of the raised dome, gasket thickness and combustion chamber volume should be considered to optimize compression for your specific head and build. This kit is well-suited for performance builds where strength, responsiveness, and reliability are priorities.