Product Details

These HKS Hipermax R ER34 Skyline coilovers fit the 1998-2001 Nissan Skyline RB25DET (ER34).

HKS builds these ER34 Skyline coilovers with 14 kgf/mm front and 12 kgf/mm rear springs and 30-level damping adjustment. The Skyline RB25DET is a Japan-market (JDM) car.

The Hipermax R is HKS's flagship street and circuit coilover. It pairs single-tube dampers with HKS's Super Response Fluid and Low Vibration Springs, so the car turns in sharply, stays flat in corners and keeps consistent damping through repeated heat cycles, while still riding well enough for the drive to and from the track.

What's in the Kit
  • Front coilover assemblies with spherical-bearing (pillowball) upper mounts
  • Rear coilover assemblies with spherical-bearing (pillowball) upper mounts
Features
  • Inverted monotube damper for strut-type applications, constant damper performance under load
  • 30-level 1-Way damping adjustment dialed in via the WR Needle valve system
  • Super Response Fluid (SRF): exclusive high-temperature-stable damper oil
  • Low Vibration Spring (LVS): lightweight 210k-grade high-strength spring wire
  • Dual Preload Valve System (Dual PVS): individually tuned per vehicle
  • HIPERMAX-exclusive upper spring retainer for coaxial spring/damper alignment
  • Pillowball upper mounts where applicable, zero deflection
  • Length-adjustable shock body: lower ride height without pre-loading the spring
  • PNE corrosion coating on threaded surfaces
  • Advanced bump rubber: progressive load response, tuned for race pace
  • DURA BOOTS heat, weather, and ozone-resistant dust boots
  • 2-year / 40,000 km warranty
  • Rebuildable / serviceable construction
  • Made in Japan
Specifications
Part Number 80310-AN008
Part Name HIPERMAX R ER34 FULL KIT
Vehicle 1998-2001 Nissan Skyline RB25DET
Chassis Code ER34
Engine RB25DET
Market Japan (JDM)
Damping Adjustment 30-Level 1-Way
Height Adjustable Yes
Spring Rate - Front 14 kgf/mm (137 N/mm)
Spring Rate - Rear 12 kgf/mm (118 N/mm)
Free Height - Front 170mm
Free Height - Rear 200mm
Upper Mount - Front Spherical bearing
Upper Mount - Rear Spherical bearing
Front Damper Type Normal single-tube
Rear Damper Type Normal single-tube
Helper Spring - Front 19.8 N/mm
Helper Spring - Rear 19.8 N/mm
Damping Force - Front (rebound / compression at 0.1 m/s) 1300 / 804 N
Damping Force - Rear (rebound / compression at 0.1 m/s) 613 / 456 N
Ride Height Range - Front -32mm (HKS factory setting), range -3mm to -62mm vs stock
Ride Height Range - Rear -33mm (HKS factory setting), range 0mm to -86mm vs stock
Overhaul / Rebuild Available
Warranty 2-year / 40,000 km
Country of Origin Japan
Notes Japan market (JDM) vehicle, not sold in the USA. Not compatible with NA vehicles and 4WD vehicles (HKS).

Vehicle fitment

This product fits the vehicles listed below.

YearMakeModelDrivetrainNotes
1998NissanSkylineRWDJapan market (JDM) vehicle, not sold in the USA. Not compatible with NA vehicles and 4WD vehicles (HKS).
1999NissanSkylineRWDJapan market (JDM) vehicle, not sold in the USA. Not compatible with NA vehicles and 4WD vehicles (HKS).
2000NissanSkylineRWDJapan market (JDM) vehicle, not sold in the USA. Not compatible with NA vehicles and 4WD vehicles (HKS).
2001NissanSkylineRWDJapan market (JDM) vehicle, not sold in the USA. Not compatible with NA vehicles and 4WD vehicles (HKS).

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