Wiseco K593M82AP Forged 82.00 mm Pistons (11.1-12.7:1) for Honda B-Series

Vehicle Fitment

• Honda B16A (e.g., Civic, Integra)
• Honda / Acura Integra B18A1 / B18B1 (with compatible head)
• Honda B18C (GSR and other DOHC 4-valve B-series)

Features

• Forged from aerospace-grade 2618 aluminum alloy
• ArmorGlide® skirt coating minimizes friction and resists seizure
• Strutted forging for enhanced strength under high RPM / load
• Dome design for high compression applications
• Anti-detonation groove to reduce knock risk
• Forced-pin oiling for reliable wrist pin lubrication
• Includes pre-gapped performance ring set (8200XX)
• Designed for performance street or racing applications

Specifications

• Bore Diameter: 82.00 mm
• Compression Height: ~30.00 mm
• Dome Volume: ~8.3 cc
• Compression Ratio: varies by variant - e.g., ~11.11:1 (B16A), ~11.83:1 (B18A1/B1), ~12.44-12.7:1 (B18C)
• Wrist Pin Diameter: 21.00 mm
• Piston Material: Forged 2618 aluminum
• Approximate Piston Weight: ~281 g

Included Components

• 4x Forged Pistons
• 4x Wrist Pins (21 mm)
• 1x Pre-gapped Ring Set (8200XX)
• 4x Piston Locks / Circlips

Product Description

The Wiseco K593M82AP is a high-performance forged piston set optimized for Honda B-series engines such as the B16A, B18A1/B1, and B18C. Crafted from 2618 aluminum, these pistons offer outstanding strength and lightweight properties to handle high-RPM tuning and aggressive builds.

Available in several compression options - depending on your head and build - you can choose between ~11.11:1 for B16A, about ~11.83:1 for B18A1/B1, or up to ~12.7:1 for the high-compression B18C. The pistons include ArmorGlide® coating for reduced friction, strutted forging for robustness, and a forced-pin oiling design to maintain reliable lubrication of the wrist pins.

This kit comes complete with 21 mm floating wrist pins and a pre-gapped 8200XX ring set, ready for installation. Ideal for performance street builds, track cars, or race engines - these Wiseco pistons deliver both durability and precision for high-output B-series applications.