Wiseco K587M89 Forged 89 mm -9 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 high strength and durability
• ArmorGlide® skirt coating to reduce friction and increase lifespan
• -9 cc dished crown to moderate compression (~10.5:1)
• Strutted forging design for enhanced rigidity
• Fully machined crown with precision ring grooves
• Forced-pin oiling for reliable lubrication at high RPM
• Includes a matched high-performance piston ring set
• 21 mm floating wrist pins for stable piston-to-rod connection

Specifications

• Bore: 89.00 mm
• Compression Height: 33.94 mm
• Piston Dish Volume: -9.00 cc
• Estimated Compression Ratio: ~10.5:1
• Wrist Pin Diameter: 21 mm
• Piston Material: Forged 2618 aluminum
• Piston Weight: ~360 g each
• Ring Set: 8900XX

Included Components

• 4x forged dished pistons (89 mm, -9 cc)
• 4x 21 mm floating wrist pins
• 4x circlips / locks
• 4x performance piston ring sets (8900XX)

Product Description

The Wiseco K587M89 piston kit is a high-performance forged set for the Nissan KA24DE engine, commonly used in 240SX models. The -9 cc dished crown and 89 mm bore create a ~10.5:1 compression ratio, balancing performance and reliability.

Made from durable 2618 aluminum, these pistons feature ArmorGlide® coated skirts to reduce friction and improve longevity. The strutted forging design enhances rigidity, and forced-pin oiling ensures consistent lubrication at high RPM.

The kit includes matched 8900XX rings and 21 mm floating wrist pins, providing a complete solution for performance builds. Proper verification of bore-to-wall clearance, ring end-gap, and deck height is recommended for optimal engine performance and longevity.