Wiseco K586M89 Forged Piston Set 89mm for Nissan 240SX KA24DE

Vehicle Fitment

• 1991-1998 Nissan 240SX (S13/S14), KA24DE 2.4L DOHC

Fitment Notes

• Compression ratio at 89.00mm standard bore listed as 8.9:1 by some sources and 9.0:1 by others - confirm current spec with Wiseco before listing
• Standard bore (89.00mm); oversize options (89.50mm, 90.00mm, 90.50mm) available under related part numbers

Features

• Forged from 2618 aluminum for high tensile strength under load
• -22cc dished design suited for turbo, supercharged, and nitrous applications
• Crown thickness and ring lands engineered for power-adder durability
• Tighter factory tolerances reduce the need for additional machining
• Includes high-quality piston rings
• Engineered, forged, and machined in the USA

Specifications

• Bore: 89.00mm (standard)
• Dish: -22cc
• Compression ratio: 8.9:1-9.0:1 (source-dependent, see Fitment Notes)
• Material: Forged 2618 aluminum
• Set: 4 pistons

Included Components

• 4x Forged Pistons
• Piston Rings
• Pins and Locks

Product Description

The Wiseco K586M89 gives 240SX KA24DE builders a proven forged piston built specifically for power-adder applications like turbos, superchargers, and nitrous. The -22cc dished design and reinforced ring lands are engineered to handle the added cylinder pressure that comes with forced induction, while Wiseco's forging process keeps tolerances tight and machining needs low.

Cast from 2618 aluminum and forged in-house at Wiseco's Ohio facility, this set comes complete with rings, pins, and locks for a straightforward install. It's a solid foundation for anyone building a KA24DE for serious street or track use where reliability under boost matters as much as outright power.