HKS Hipermax IV SP Coilovers - Subaru Impreza WRX 02-07 & 04 STi (5x100)

Regular price $2,039.98 USD Sale price $2,039.98 USD Regular price $2,300.00 USD
Sale 11.31% $260.02 USD (11.31%)
Special order - Ships in 8+ weeks
SKU: hks80250-AF004
Product Description
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 [GDA 5x100 PCD] (2004)
  • Subaru Impreza WRX (2002, 2003, 2004, 2005, 2006, 2007)


Designed specifically for each vehicle
30-way dampening adjustable
Powder-coated for corrosion resistance
Redesign from Hipermax III
Made in Japan

Extended Information

Damping Force (Front): 1900m/sec (Rebound) & 700m/sec (Compression)
Damping Force (Rear): 700m/sec (Rebound) & 300m/sec (Compression)
Front Upper Mount: Adjustable Pillow
Lowering (Front): -54mm (From 0 to -69mm)
Lowering (Rear): -32mm (From 0 to -35mm)
Rear Upper Mount: Fixed Pillow
Spring Length (Front): 170mm
Spring Length (Rear): 220mm(Barrel)
Spring Rate (Front): 118N/mm (12kgf/mm)
Spring Rate (Rear): 98N/mm (10kgf/mm)

To provide faster delivery and turn around time; Kami Speed ships products out from different warehouses throughout the United States. Usually averaging 1-4 business days for processing prior to shipping.

Depending on the package, we ship using different carriers according to the item's location, content, and size.

Freight truck & international items, will require up to 7 business days to ship due to size and logistics.

All orders made after 3:00pm ET will be shipped or processed the next business day.

Unless otherwise noted as "In Stock" or exact ETA. Special Order items have an ETA of 5+ weeks.

Orders over $500 will ship insured and over $1,000 with signature and insurance in order to guarantee delivery. Orders over $1000 may not be able to ship to a different address not listed as the billing address or confirm payment address from the form of payment used. Orders with suite numbers, different billing, or apartment numbers will require signature if valued over $100.

All international orders outside of the USA are subject to duties and taxes fees per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.

Processing and logistics on in stock international orders can take up to 7 business days to process & ship.

In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, 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 via e-mail. All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).

Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.

For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.

WARNING: Operating, servicing and maintaining a passenger vehicle or off-highway motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to

Customer Reviews

No reviews yet