Wiseco K587M895 Forged 89.5 mm -9.5 cc Pistons for Nissan KA24DE / 240SX

Vehicle Fitment

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

Features

• Forged from 2618 aluminum for maximum strength and durability
• ArmorGlide® skirt coating to reduce friction and wear
• -9.5 cc dished crown to optimize compression (~10.3:1)
• Strutted forging design for improved structural rigidity
• Fully machined crown with precision ring groove geometry
• Forced-pin oiling to ensure reliable lubrication at high RPM
• Includes matched high-performance piston ring set
• 21 mm floating wrist pins for strong piston-to-rod connection

Specifications

• Bore: 89.50 mm
• Compression Height: 33.94 mm
• Piston Dish Volume: -9.5 cc
• Estimated Compression Ratio: ~10.3:1
• Wrist Pin Diameter: 21 mm
• Piston Material: Forged 2618 aluminum
• Piston Weight: ~358 g each
• Ring Set: 8950XX

Included Components

• 4x forged dished pistons (89.5 mm, -9.5 cc)
• 4x 21 mm floating wrist pins
• 4x circlips / locks
• 4x high-performance piston ring sets (8950XX)

Product Description

The Wiseco K587M895 piston kit is a forged high-performance solution for Nissan KA24DE engines, including 240SX applications. The 89.5 mm bore with a -9.5 cc dished crown provides a compression ratio of ~10.3:1, ideal for balanced performance builds.

Made from 2618 aluminum, these pistons are designed to withstand high RPM and increased load. ArmorGlide® skirt coating reduces friction and improves durability, while strutted forging reinforces structural strength. Forced-pin oiling ensures adequate lubrication even under extreme conditions.

The kit includes matched 8950XX piston rings and 21 mm floating wrist pins, offering a complete solution for high-performance engine assembly. Installation requires proper verification of bore-to-wall clearance, ring gaps, and deck height to achieve optimal performance and reliability.