Crafted in the company’s Japan factory, each and every HKS product guarantees the highest level of quality, durability, and performance. HKS suspension products are a popular choice among enthusiasts for the top-notch driving performance they provide along with a comfortable ride. HKS employs single-tube dampers because it believes that is the best choice for street and sport applications. It helps to achieve ideal traction in any conditions for an overall excellent driving experience that doesn’t compromise comfort levels.

While HKS already offers a number of great suspension products for the highly regarded GR Supra, it doesn’t stop there. The brand just announced the availability of its latest offering for the Supra specifically developed for drag racing: the Hipermax IV SP Drag DB42 Full Kit. HKS incorporated the latest technology to deliver the best performance in the modern drag scene.

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The brand’s Hipermax Series Max IV SP is the ultimate sport model for high-grip radial tires. It will transfer both a feeling of control and important information straight to the driver, such as tire factors, road surface conditions, and traction. It is the perfect street and sport model suspension for those who enjoy driving fast but want to remain comfortable when doing so. In fact, HKS says that with this product, you’ll experience comfort in even the most winding roads. 

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 HKS’ internal test, the brand’s factory shock length settings can perform shorter drag time. What’s more, it will have more a competitive edge after adjusting the shock length of vehicle posture properly for the unique vehicle (i.e. the Supra here) and track. HKS also 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 one second. It was also found that the loss was suppressed by the traction applied to the rear tire in the zone inducing a wheel spin.

Concept

• 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.

Components:

• 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

Fitment:

• 2020+ Toyota GR Supra

Learn More and Purchase the Drag Kit for Toyota GR Supra Here!

If you have any questions, please do not hesitate to contact us. You can reach us by phone at 1-480-966-3040 or via email at [email protected]