HKS 80310-AN004 HIPERMAX R Coilovers for 1989-1994 Nissan Skyline GT-R 2.6L

Vehicle Fitment

• 1989-1994 Nissan Skyline GT-R BNR32 (RB26DETT 2.6L I6 Twin-Turbo, AWD)

Fitment Notes

• Designed specifically for the BNR32 Nissan Skyline GT-R chassis.
• HKS application data specifies the RB26DETT engine.
• HKS lists the application from August 1989 through December 1994.
• HKS development data was based on a BNR32 GT-R V-spec II.
• Vehicle height and adjustment values can vary according to individual vehicle condition, installation, wheel/tire combination, and alignment.
• Lowest ride-height settings may not be road legal and may cause interference between suspension components, bodywork, wheels, or tires.
• Professional installation and a complete alignment are recommended after installation.

Features

• HKS HIPERMAX R complete coilover suspension system.
• 30-step damping-force adjustment at both front and rear.
• Height-adjustable lower brackets at both ends.
• Spherical-bearing upper mounts front and rear.
• Normal-type damper construction front and rear.
• Coilover damper and spring configuration front and rear.
• 19.8 N/mm helper springs included front and rear.
• Factory spring-rate changes are supported.
• HKS SRF (Super Response Fluid) developed specifically for HIPERMAX R.
• HKS LVS (Low Vibration Spring) technology for improved ride and handling characteristics.
• Designed for a wide range of driving conditions from winding roads to circuit use.
• Front and rear damping adjustment dials provide broad suspension tuning capability.

Specifications

• Brand: HKS
• Part Number: 80310-AN004
• Product Series: HIPERMAX R
• Product Type: Full Coilover Suspension Kit
• Vehicle: Nissan Skyline GT-R
• Chassis: BNR32
• Engine: RB26DETT 2.6L I6 Twin-Turbo
• Drive Type: AWD
• Position: Front and Rear
• Damping Adjustment: 30 steps, Front and Rear
• Upper Mount: Spherical Bearing, Front and Rear
• Damper Type: Normal, Front and Rear
• Front Spring Rate: 137 N/mm (14.0 kgf/mm)
• Rear Spring Rate: 118 N/mm (12.0 kgf/mm)
• Front Spring Free Height: 170 mm
• Rear Spring Free Height: 200 mm
• Helper Spring Rate: 19.8 N/mm, Front and Rear
• Front Damping Force at 0.1 m/sec: 1162 N Rebound / 701 N Compression
• Rear Damping Force at 0.1 m/sec: 623 N Rebound / 608 N Compression
• Factory Front Ride Height Change: -42 mm from stock
• Factory Rear Ride Height Change: -17 mm from stock
• Front Adjustable Ride Height Range: -9 to -63 mm from stock
• Rear Adjustable Ride Height Range: 0 to -48 mm from stock
• Front Drivable Ride Height Range: -9 to -63 mm from stock
• Rear Drivable Ride Height Range: 0 to -48 mm from stock
• Warranty: 2 years / 40,000 km

Included Components

• 2x Front Suspension Assemblies
• 2x Rear Suspension Assemblies
• 2x Front Spacers
• 1x Damping Adjustment Dial
• 2x M12 Bolts
• 1x Hook Wrench
• 2x M12 Washers
• 1x 12.7-Square Hook Wrench
• 4x Thin Rear Spacers
• 4x Thick Rear Spacers
• 2x M12 Flange Nuts
• 1x Warranty Registration Card
• 1x Installation Manual

Product Description

The HKS 80310-AN004 HIPERMAX R is a complete adjustable coilover suspension system specifically engineered for the BNR32 Nissan Skyline GT-R powered by the RB26DETT 2.6L twin-turbo inline-six. The kit includes front and rear coilover assemblies with spherical-bearing upper mounts, height-adjustable lower brackets, and independent 30-step damping adjustment.

HKS specifies 137 N/mm front springs and 118 N/mm rear springs, with 19.8 N/mm helper springs at both ends. The HKS recommended factory setting provides approximately 42 mm of front lowering and 17 mm of rear lowering compared with stock. The adjustable range allows further ride-height tuning, subject to HKS's specified limits and potential wheel, tire, body, and suspension-component clearance.

HIPERMAX R incorporates HKS-developed SRF damping fluid and LVS spring technology to balance handling response and ride quality across winding-road and circuit applications. The system is supplied as a complete front-and-rear kit with the required adjustment hardware and installation components. A professional installation followed by wheel alignment and clearance inspection is recommended.