Image is only a representation. Actual design will be vehicle specific

Fitment Information

• Subaru WRX STi (2015, 2016, 2017, 2018, 2019, 2020, 2021)
• WRX Sedan (2015, 2016, 2017, 2018, 2019, 2020, 2021)

Specs & Features

• 80300-AF009P - w/ Front Upper Mount Pillow ball type
• 80300-AF009 - w/o Front Upper Mount Pillow ball type
• Spring Rate:
  • Front: 88 N/mm (9 kgf/mm)
  • Rear: 69 N/mm (7 kgf/mm)
• Vehicle Height (Highest - Lowest)
  • 80300-AF009P:
  • Front: -25mm (0mm to -47mm)
  • Rear: -17mm (0mm to -63mm)
  • 80300-AF009:
  • Front: -25mm (0mm to -37mm)
  • Rear: -17mm (+1mm to -62mm)
• Damping force adjustment: 30 steps
• Upper mount: Spherical bearing or Rubber
• Inverted/Normal type: 
  • Front: Inverted
  • Rear: Normal
• Damper/Spring layout:
  • Front: Coilover
  • Rear: Coilover
• Single Tube Damper Design: HIPERMAX S series maintains single tube structure for stable damping with separated gas and oil chambers, enabling larger piston diameter for stable damping.
  
• Inverted Shock Absorber (Strut): Spreads lateral forces over larger area, increasing rigidity, while attaching damper to body side reduces wheel weight for enhanced handling.
  
• Dual PVS: "Dual PVS" reduces high-speed damping, improving handling performance.
  
• WR Needle: Improved needle shape allows clearer 30-step adjustments, offering softer options for street driving.
  
• ADVANCED BUMP RUBBER: Provides softer rides with wider range of options.
  
• PNE Coating: Offers superior durability, combating corrosion effectively.
  
• Strengthened Rubber Upper Mount: Absorbs small vibrations while tightening mount for improved performance.
  
• KODAWARI" of Exterior: Machined aluminum top mount enhances aesthetics.
  
• Peace of mind with 3 years warranty: HKS offers 3-year warranty for confident reliability.

Product Description

In 2021, HKS upgraded its MAX IV GT series to HIPERMAX S after 9 years of innovation, enhancing damping force, durability, and aesthetics. The HIPERMAX S series boasts HKS's best suspension yet, featuring a single tube damper design for stable damping force, inverted shock absorbers for increased rigidity and reduced weight, and Dual PVS for improved handling. With the addition of WR Needle for wider damping adjustments, ADVANCED BUMP RUBBER for smoother experiences, and PNE Coating for superior durability, HKS ensures quality and performance. Strengthened rubber upper mounts and meticulous exterior detailing further elevate the product, all backed by a 3-year warranty reflecting HKS's commitment to excellence and reliability. With extensive in-house testing and development, HKS provides peace of mind and confidence in the durability and performance of HIPERMAX S series, setting a new standard in suspension technology.