Wiseco K542M82AP Forged Sport-Compact Piston Kit for 90-01 Honda/Acura B-Series

Vehicle Fitment

• 1990-2001 Acura Integra (B18A / B18B / B18C, 1.8L)
• 1992-1993 Acura Integra GSR (B17A1, 1.7L)
• 1994-2001 Honda Civic / Civic Si / del Sol (B16A, 1.6L)

Features

• Forged from 2618 aerospace-grade aluminum for superior strength and durability
• ArmorGlide® coated skirts reduce friction and enhance piston movement
• Strutted forging design improves rigidity under high load
• Flat-top crown with -2.40 cc dish for quench and detonation control
• Precision machined ring grooves for reliable sealing
• Anti-detonation groove in crown improves combustion stability
• Offset 21 mm wrist pin reduces piston slap and vibration
• Complete kit includes piston rings and wrist pins for full rebuild readiness

Specifications

• Bore: 82.00 mm
• Compression Height: 29.85 mm
• Piston Dish Volume: -2.40 cc
• Material: 2618 forged aluminum
• Wrist Pin Diameter: 21 mm
• Ring Set: included (top, second, and oil rings)
• Stroke: varies by engine (77.4-89 mm)
• Piston Weight: ~296 g
• Compression Ratios by Engine: ~9.37:1 (B17A), ~9.57:1 (B18A), ~10.05:1 (B18C)

Included Components

• 4x forged pistons (K542M82AP)
• 4x wrist pins (21 mm)
• 4x piston ring sets
• 4x wrist pin locks/clips

Product Description

The Wiseco K542M82AP is a high-performance forged piston kit designed for Honda and Acura B-series engines. Built from premium 2618 aerospace-grade aluminum, these pistons provide strength, durability, and high-revving performance for both street and racing applications. The ArmorGlide® coated skirts reduce friction and improve longevity under extreme conditions.

The flat-top crown with -2.40 cc dish maintains a stable quench area to reduce detonation and ensure efficient combustion. Precision ring grooves and an anti-detonation groove optimize ring sealing and combustion reliability. The offset 21 mm wrist pin further minimizes piston slap and vibration.

This complete kit includes four pistons, wrist pins, piston rings, and locks, providing everything needed for a full rebuild. Compatible with Honda Civic B16A, del Sol, and Acura Integra B17A/B18A/B/C engines, it is ideal for enthusiasts seeking maximum reliability and performance in high-output builds.