Wiseco K586M89AP Forged 89.5 mm -22 cc Pistons for Nissan KA24DE

Vehicle Fitment

• Nissan KA24DE (2.4 L, 16-valve)
• 240SX (1991-1998) with KA24DE

Features

• Forged from 2618 aluminum for high strength and fatigue resistance
• ArmorGlide® skirt coating for reduced friction and smooth operation
• -22 cc dished crown to lower compression (~8.9:1)
• Strutted forging design for added rigidity in high-stress zones
• Fully machined crown with precise ring groove geometry
• Forced-pin oiling to maintain lubrication at high RPMs
• Includes performance piston ring set (8900XX)
• 21 mm floating wrist pins for strong piston-to-rod connection

Specifications

• Bore: 89.50 mm
• Compression Height: 33.94 mm
• Piston Dish Volume: -22.00 cc
• Estimated Compression Ratio: ~8.9:1
• Wrist Pin Diameter: 21 mm (0.827")
• Piston Material: Forged 2618 aluminum
• Piston Weight: ~352 g each
• Ring Set: 8900XX

Included Components

• 4x forged dished pistons (89.5 mm, -22 cc)
• 4x 21 mm floating wrist pins
• 4x circlips / locks for wrist pins
• 4x high-performance piston ring sets (8900XX)

Product Description

The Wiseco K586M89AP piston kit is a high-performance, forged set designed for Nissan's KA24DE engine. Its 89.5 mm bore and deep -22 cc dish offer a lower compression ratio, making it ideal for high-RPM or power-addicted builds.

Constructed from robust 2618 alloy, these pistons are engineered to handle stress under demanding conditions. The ArmorGlide® coating on the skirts minimizes friction and improves durability. Strutted forging adds rigidity, while forced-pin oiling ensures reliable lubrication during high-load operation.

The kit also includes a matched 8900XX ring set and 21 mm floating wrist pins for a complete high-performance rebuild. For best results, verify bore-to-wall clearance, ring gaps, and deck height during installation to achieve optimal performance and longevity.