Description

The HKS HIPERMAX for GR86/BRZ Cup is the ultimate, purpose-built coilover suspension system, officially developed and designated for the TOYOTA GAZOO Racing GR86/BRZ Cup (Professional Series). Engineered with direct input from legendary development driver Nobuteru Taniguchi and validated at circuits like Fuji Speedway, this 2025-spec kit represents the pinnacle of circuit performance. It features revised damping, front outer fastening, and specialized short bump rubbers to deliver unmatched stability over curbs, increased cornering feedback, and optimized traction/understeer balance for competitive laptimes.

Product Highlights

🏁 Official 2025 GR86/BRZ Cup Designated Part
This is not an adaptation—it is the official, competition-designated suspension developed in collaboration for the Professional Cup series. Its specifications are honed for the exact regulations, tires, and dynamics of the race car.

👨‍🏫 Developed with Nobuteru Taniguchi
Tuned and validated by legendary professional driver Nobuteru Taniguchi, ensuring the setup provides maximum confidence, clear feedback, and the ability to exploit the car’s limits on circuit.

⚙️ Circuit-Optimized 2025 Specifications
Updated for the 2025 season with:

• Revised damping force curves for improved control.

• New front outer fastening structure for increased rigidity and precision.

• Short front & rear bump rubbers to maintain stability and control when aggressively using curbs.

🔧 Advanced Performance Technology

• High-Performance SRF Fluid: Special high-viscosity oil for consistent damping and heat resistance, providing response from low piston speeds.

• High-Tension LVS Springs (Front): Low Vibration Spring technology for immediate response and flexibility.

• Spring Retainers: Standard on top mounts to eliminate side load and friction, improving posture control and stability.

• Full-Length Adjustability & Pillowball Upper Mounts (F/R): For precise ride height and alignment tuning.

• Included Front Adjustable Stabilizer Links: For optimal anti-roll bar geometry with lowered ride height.

⚠️ Pure Competition Focus – Not for Street Use
This kit is designed exclusively for circuit performance. Ride comfort on public roads is not a consideration. It is not covered by warranty and using it at extreme lowering limits can void coverage. Specification change services are not offered.

Technical Specifications

• Product Name: HIPERMAX for GR86/BRZ Cup

• Model Code: 86CUP-AT002

• Compatibility: Toyota GR86 / Subaru BRZ (ZN8/ZD8, FA24, 2021+)

• Certification: ASEA Standard Registered, TRA 250220-213

• Damping Adjustment: 30-step (Front & Rear)

• Construction: Front Inverted / Rear Upright

• Upper Mount: Pillowball (Front & Rear)

• Adjustment: Full-length ride height

• Included: Front adjustable stabilizer links

Spring Rates (Full Kit Setting):

• Front: 78 N/mm (8.0 kgf/mm)

• Rear: 98 N/mm (10.0 kgf/mm)

Test Vehicle Alignment (Reference):

• Front: Toe Out 1mm, Camber -2°50′

• Rear: Toe Out 1mm, Camber -1°50′

Vehicle Height Adjustment Range (From Road to Fender):

• Front: 630mm – 664mm (Shipment: 648mm)

• Rear: 612mm – 669mm (Shipment: 641mm)

Performance & Setup Philosophy

• Goal: Improve lap times by enhancing driver confidence, cornering information, and traction while managing factory electronic controls.

• Key Traits: Increased feedback during cornering and acceleration/braking, improved understeer balance, and superior curb stability.

• Development Venues: Fuji Speedway, Okayama International Circuit.

• Comparison: Tested against 2024-spec BS and DL suspension to validate improvements.

Critical Installation & Usage Notes

🔧 Professional Installation & Setup Mandatory
Installation must be performed by a professional race shop. A full precision alignment is required. Use the included front adjustable stabilizer links to prevent contact with the damper body.

📐 Use Official Setup Data as Baseline
The provided vehicle height, alignment, and damper settings (shipment: 15 clicks F/R) are the recommended starting points developed by HKS and Taniguchi. These are optimized for Cup-spec tires (215/45R17) and weight.

🚫 Not for Public Road Use
This suspension is designed solely for competition. Its stiff spring rates, damping profile, and short bump travel make it unsuitable and potentially unsafe for regular street driving.

⚙️ Overhaul Service Available
The dampers can be overhauled (rebuilt) by HKS or authorized service centers, but specification changes are not offered.

■ Kit information

● Full kit setting spring

● Damper specs

*The damping force value is the value when the piston speed is 0.1 m/sec.

● Setting data

*For the upper and lower limits of the vehicle height, please refer to the vehicle height information column above *3.

■ Test vehicle information