Wiseco K586M895AP Forged 89.5 mm -22 cc Pistons for Nissan KA24DE

Vehicle Fitment

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

Features

• Forged from 2618 aerospace-grade aluminum for maximum strength and durability
• ArmorGlide® skirt coating to reduce friction and resist seizure
• -22 cc dished crown to lower compression (approximately 9.0:1)
• Strutted forging design for improved structural rigidity under high load
• Fully machined crown with precision ring groove geometry
• Forced-pin oiling for reliable lubrication even at high RPM
• Comes with performance piston ring set (8950XX)
• 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
• Compression Ratio: ~9.0:1
• Wrist Pin Diameter: 21 mm (0.827")
• Piston Material: Forged 2618 aluminum
• Piston Weight: ~358 g each
• Ring Set: 8950XX

Included Components

• 4x forged dished pistons (89.5 mm, -22 cc)
• 4x 21 mm floating wrist pins
• 4x circlips / locks for the wrist pins
• 4x high-performance piston ring sets (8950XX)

Product Description

The Wiseco K586M895AP piston kit is built for high-performance Nissan KA24DE engines, especially in 240SX applications. With a sizable 89.5 mm bore and a -22 cc dished top, these forged pistons reduce static compression, making them ideal for modified, high-RPM, or forced-induction builds.

Constructed from 2618 alloy, these pistons offer excellent strength and fatigue resistance. The ArmorGlide® coating on the skirts minimizes friction and helps protect against scuffing. The strutted forging enhances durability under high load, and forced-pin oiling ensures proper lubrication at high RPM. A matched set of 8950XX rings and 21 mm floating wrist pins complete the kit.

For optimal installation, it's important to verify bore-to-wall clearance, ring end-gap, and deck height. Considering the dished design, selection of the right head gasket and precise measurement of final compression ratio are essential for achieving performance and reliability.