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HKS Hipermax IV GT Coilovers - Subaru STI 2005-2007

HKS Hipermax IV GT Coilovers - Subaru STI 2005-2007

Regular price $1,760.00 USD $1,579.78 USD

Availability: In Stock Out of stock

Manufacturer: HKS

SKU: hks80230-AF003

About The Product

Adjusting your vehicles suspension is one of the easiest ways to instantly improve overall performance. HKS offers a complete line of coilover suspension systems for every need. The HKS Hipermax IV line is their top tier setup, tuned and designed for street performance and race applications. HKS utilizes its experience from 35 years of circuit, GT, drift, and drag racing to bring you the cutting edge in suspension technology.

  • Subaru Impreza WRX STI [GDB] (2005, 2006, 2007)


Hiper Linear Piston – Linear progression piston adjusts oil passages for precise stroke management resulting in smoother valve movements. As piston speed increases, dampening rate linearly increases.
2 Way Adjustable Front Pillowball Mount
Strengthened rubber rear upper mounts – enhanced durability
Monotube design
Shock-body length adjustable
65mm diameter springs – Cold wound and manufactured in-house at HKS to ensure quality and consistency
Stainless lock nut & ride height adjuster – feature anti-rust & corrosion characteristics for enhanced durability.
30-way adjustable dampening
Hard chrome-plated cylinder shaft
Non-electrolysis Nickel plated shock bodies provide durability in severe weather conditions.

Extended Information

Damping Force (Front): 1515m/sec (Rebound) & 412m/sec (Compression)
Damping Force (Rear): 441m/sec (Rebound) & 157m/sec (Compression)
Front Upper Mount: Rubber
Lowering (Front): -33mm (From 0 to -56mm)
Lowering (Rear): -12mm (From -12 to -99mm)
Rear Upper Mount: Rubber
Spring Length (Front): 220mm(Barrel)
Spring Length (Rear): 250mm(Barrel)
Spring Rate (Front): 59N/mm (6kgf/mm)
Spring Rate (Rear): 29N/mm (3kgf/mm)

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Customer Questions

Return Policy

Most items may be returned within 30 days of the product arriving to your house or place of work. Returns will NOT be accepted on final sales, special orders, opened, installed, incomplete, or otherwise used products. In order to initiate a return, an RMA number must be requested and approved. All returns will be subject to a 15% restocking fee minus complete shipping cost. For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.