Wiseco K506M82 Forged 82 mm 4A-GE Piston Kit +5.9 cc Dome

Vehicle Fitment

• Toyota 4A-GE 1.6 L I4 (16V) - e.g., Celica, MR2

Features

• Forged from high-strength 4032 (or 2618) aluminum alloy
• ArmorGlide® skirt coating to reduce friction and improve wear resistance
• +5.9 cc dome crown for increased compression and power potential
• Anti-detonation groove and precision ring lands for optimal sealing
• Forced pin oiling to ensure reliable lubrication of the wrist pin
• Strutted skid-profile skirt design for strength and stability
• Floating 20 mm wrist pins with secure retainers
• Includes high-performance ring set (3228XC or equivalent)
• Designed for high-stress or race-tuned applications

Specifications

• Bore: 82.00 mm
• Stroke: 77.00 mm
• Rod Length: 122.00 mm
• Compression Height: 30.68 mm
• Piston Volume (Dome): +5.9 cc
• Wrist Pin Diameter: 20 mm
• Material: Forged 4032 aluminum
• Piston Weight: ~294 g (each)
• Ring Set: 3228XC (or equivalent)

Included Components

• 4x Forged Wiseco pistons
• 4x Floating wrist pins (20 mm)
• 4x Retainers for wrist pins
• 4x Ring sets (top, second, oil)

Product Description

The Wiseco K506M82 is a forged performance piston kit made for the Toyota 4A-GE 1.6L (16-valve) engine, commonly found in Celica and MR2 models. With an 82 mm bore and a +5.9 cc dome design, these pistons boost compression, making them ideal for performance-focused builds where response and power gains are desired.

Constructed from a durable high-grade aluminum alloy and coated with ArmorGlide®, these pistons deliver both strength and reduced friction. The strutted skirt design enhances stability, and the anti-detonation groove helps maintain efficient ring sealing under extreme conditions. Forced pin oiling ensures reliable lubrication around the wrist pin for long-lasting performance.

This complete piston kit includes floating 20 mm wrist pins, retainers, and a premium ring set. It's suitable for high-performance street or race engines where increased compression and durability are critical. Whether you're building for high revving naturally aspirated power or a tuned race setup, the K506M82 gives you the reliability and performance needed in a serious 4A-GE build.