HKS already developed performance parts for latest of Toyota GR Supra keeping in mind the concept of total performance. HKS suspension makes it possible to adjusted vehicle height and lower by -45mm maximum compared to stock suspension. It combines the ability to withstand extreme driving and offers a comfortable ride feeling with a sporty lowdown look. Testing was performed on a touge like circuit Gunma Cycling Center also know as Gunsai, with Japanese racing driver Manabu Orido.
Springs. The springs having a variable pitch of barrel stabilizes the car body.
Ride Hight Adjuster. The ride height adjuster can be used with stock lower spring set. Dust boots can be installed in the same stock suspension.
Rear Bump Rubber. HKS developed a new rear bump rubber specially for GR SUPRA with improved durability and better suitable performance for lowered application.
Rear Dust Boots. Stock dust boot won't fit with the kit, so HKS developed a new one for those who would like to have it installed.
Spring Rate F/R: 42.6/116.8(N/mm), Height: F=-25 to -45 R=0 to -50 (mm)
Recently, a lot of high performance cars feature electronic control of damping force adjustment. HKS assumed it would be best to keep stock electronic control system but add additional flexibility and offers a height adjustable spring. HKS height adjustable spring kits are a great alternative to conventional springs. With the included height adjuster, it is possible to select the height that is best suited to your need for a more comfortable and sporty ride. This spring kit allows you to keep your OEM electronic damping control intact while still giving you the ability to lower the car to your desired ride height.
 
These height adjustable springs are our shop's top recommendation if you're looking for lowering springs for the MKV MK5 Toyota Supra GR A90 especially of the height adjustable type that works with OEM suspension function.