HKS MAX 4 GT-A FULL KIT FOR 2013+ SUBARU BRZ ZC6 (hks80230-AF012V)

Regular price $1,776.87 USD Sale price $1,776.87 USD Regular price $2,000.00 USD
Sale 11.16% $223.13 USD (11.16%)
Special order - Ships in 5+ weeks
SKU: hks80230-AF012V
Product Description

The HKS MAX 4 GT-A FULL KIT is an "Ultimate Street Damper" developed under the supervision of rally driver Mr. Toshihiro Arai. To provide suspension available for all road conditions (stabilized road-holding performance), the stroke was extended. Tests of the spring bump rubber and damping force were conducted many times to provide the best road-holding performance. Additionally, ride comfort was much enhanced than the existing MAX IV GT. There is a range where the load shift is controlled in a critical area. Without unfavorable understeering and/or sudden oversteering and with reliable traction, high quality and pleasant driving feelings are created to enjoy BRZ for a long time. The best handling dial position Rally driver Mr. Toshihiro Arai selected at the time of testing at Gunsai is 15 for both front and rear. The value within the parenthesis under the stroke section is the stroke length of the bump rubber.


  • Making a slit on the rear interior liner for the rear adjustment dial is required.


  • SUBARU BRZ (2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021)


  • Adjustability: 30 way
  • Spring Rate (N/mm (kgf/mm)):
    -Front: 39+19(4+2)
    -Rear: 39+19(4+2)
  • Upper Mount:
    -Front: Spherical bearing
    -Rear: Rubber
  • Helper Spring (Spring Rate N/mm):
    - Front: N/A
    - Rear: Yes (19.8N/mm)
  • Damping Force Adjustment:
    - Front: 30 Steps
    - Rear: 30 Steps
  • Shock Layout:
    - Front: Inverted
    - Rear: Normal
  • Adjustable Ride Height (mm):
    - Front: 671~610
    - Rear: 671~626
  • Adjustable Ride Height (Recommended Range):
    - Front: 671~629
    - Rear: 671~626
  • Free Height (mm):
    - Front: 200
    - Rear: 170
  • Damping force (Rebound/Damping)N (piston speed 0.1m/sec):
    - Front: 400/300
    - Rear: 350/350
  • Remaining damper stroke (Rebound/Damping) (mm)
  • Load: -25
  • Max High: 0
  • Minimum Low: -61

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 items, will require up to 7 business days to ship due to size. i.e. hoods, trunks, body kits, etc.

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

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 or apartment numbers will require signature if valued over $200.

All international orders outside of the USA are subject to duties and taxes 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.

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