HKS 21005-AN018 Piston Ring Set 86.5mm for 1989-2002 Nissan Skyline GT-R

Vehicle Fitment

• 1989-1994 Nissan Skyline GT-R (R32, RB26DETT, AWD) - applicable when equipped with the specified HKS 86.5mm piston configuration.
• 1995-1998 Nissan Skyline GT-R (R33, RB26DETT, AWD) - applicable when equipped with the specified HKS 86.5mm piston configuration.
• 1999-2002 Nissan Skyline GT-R (R34, RB26DETT, AWD) - applicable when equipped with the specified HKS 86.5mm piston configuration.

Fitment Notes

• Designed specifically for HKS 86.5mm piston applications in the Nissan RB26DETT engine.
• Compatible HKS piston applications include 21003-AN006, 21003-AN013, 21003-AN015, and 21003-AN016.
• Not a direct replacement for the factory RB26DETT piston rings or other piston diameters.
• Engine machining and piston configuration must match the HKS application before installation.

Features

• HKS Type-LF piston ring set.
• Designed for Nissan RB26DETT applications.
• 86.5mm piston diameter application.
• Developed for HKS forged piston configurations.
• Supports HKS 2.8L STEP ZERO and STEP1 applications.
• Supports specified HKS STEP2 piston applications.
• Supports specified HKS STEP3 and High Response piston applications.
• Provides replacement piston-ring components for compatible HKS piston assemblies.

Specifications

• Brand: HKS
• Part Number: 21005-AN018
• Product: Piston Ring Set Type-LF
• Engine: Nissan RB26DETT
• Application Diameter: 86.5mm
• Compatible HKS Pistons: 21003-AN006, 21003-AN013, 21003-AN015, 21003-AN016
• Top Ring: 1.2 x 3.1mm
• Second Ring: 1.2 x 2.9mm
• Oil Ring: 2.0 x 2.7mm
• Position: Piston ring assembly

Included Components

• 6x Top Piston Rings
• 6x Second Piston Rings
• 6x Oil Piston Rings

Product Description

The HKS 21005-AN018 Type-LF Piston Ring Set is a replacement ring set designed for HKS 86.5mm piston applications in the Nissan RB26DETT engine. HKS specifies this ring set for its 21003-AN006, 21003-AN013, 21003-AN015, and 21003-AN016 piston configurations, covering designated 2.8L STEP ZERO, STEP1, STEP2, STEP3, and High Response applications.

The set uses an HKS-specific ring configuration with a 1.2 x 3.1mm top ring, 1.2 x 2.9mm second ring, and 2.0 x 2.7mm oil ring. This product should only be installed with the corresponding 86.5mm HKS piston configuration and appropriate engine machining. It is not intended as a universal replacement for factory RB26DETT piston rings or other bore sizes.