Regular price $2,971.60 USD Sale price $2,971.60 USD Regular price $3,400.00 USD
Sale 12.6% $428.40 USD (12.6%)
In Stock!
SKU: hks80250-AT003D
Product Description

The full-length adjustable suspension allows the stroke ratio (bump touch timing) to be changed without changing the vehicle height. Adjusting the shock length of the rear shock to a shorter value can delay the bump touch timing and increase the nose-up angle. In our internal test, HKS factory shock length settings can perform a shorter drag time. Furthermore, it will have more competitive after the adjusted shock length of vehicle posture properly for the unique vehicle and track. Also, we used launch controls to test for time differences. As a result, it was confirmed that a time of 0 -100 km has an advantage of about 1 second. It was also confirmed that the loss was suppressed by the traction applied to the rear tire in the zone inducing a wheel spin.


  • TOYOTA GR SUPRA (2020, 2021, 2022)


  • The stock front strut cannot adjust the camber angle due to it needs to be inserting the lower strut.
    To avoid this, using an adjustment type pillow upper can make the adjustment about 1 degree from the stock mount position instead. At the circuit driving, increasing negative camber decreases understeer. In addition, we used a steel plate to ensure strength.
  • Using HKS traditional inverted type at the front. Of course, the strut-type must ensure high rigidity but the inverted type does not necessarily mean the use of the large main shaft modifications to ensure the rigidity. This allows us to achieve smooth stroking without changing gas pressure.
    To ensure the stroking amount and height adjustable range, HKS designed a special outer cover.
  • The rear upper mount used billet aluminum with laser marking and also did weight-saving modifications without losing strength.
  • Single Tube
  • 30 Levels Adjustable Damping
  • Shock-body Length Adjustable
  • Inverted Type (Front)
  • Pillow Upper Mount
  • Camber Angle Adjustable (Front)
  • Special Oil
  • PNE Coating
  • Overhaul Available
  • Spec. Change Available


  • GR Supra has a launch control to allow an excellent start. However, the stock suspension is set to assure traction in front and rear for multiple situations. The MAX IV SP DRAG is specifically designed to provide traction on the rear tire and maintain that traction.
  • Bump rubber is attached to the rear shock in order to cope with the higher power and higher grip expected in the future. Bump rubber has the effect of another spring.
  • The special billet aluminum upper plate at the rear shock was made lightweight after identifying the part that needs strength.
  • The straight wound spring is used at both front and rear allowing to easily change spring rates.


  • Spring Rate [N/mm(kgf/mm)]: F=59(6) | R=98(10)
  • Spring Length (mm): F=200 (straight wound) | R=250 (straight wound)
  • Height at Factory (Upper-Lower): F=-22 (-17 to -65) | R=-20 (-12 to -75)
  • Upper Mount: F=Pillow | R=Pillow
  • Upper Mount Assy before Shipment: No
  • Spring Rate Change at Factory: F=Yes | R=Yes

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, 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.

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

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