■ Compatibility/Installation Information

Product Overview & Purpose

Built for the serious performer, the HIPERMAX R elevates the GR Corolla to a new level of chassis control and driver engagement. It replaces softer, comfort-oriented tuning with a motorsport-derived philosophy, prioritizing turn-in sharpness, cornering stability, and predictability at the limit. Developed and validated on Fuji Speedway with aggressive tire and alignment setups, it provides a professional, out-of-the-box baseline for competitive driving.

Product Highlights

🏁 Circuit-Optimized Performance & Tuning Data

• Track-Validated Setup: Developed on Fuji Speedway with high-grip 265/35R18 ADVAN A052 tires. Includes specific recommended damper settings (F:10, R:13 clicks) and aggressive alignment data (e.g., -4° front camber) as a proven starting point for circuit use.

• Extreme Roll Control & High-Speed Stability: Features very high spring rates (137 N/mm F, 196 N/mm R) to provide exceptional roll rigidity, allowing for later braking, higher cornering speeds, and more aggressive throttle application.

• Precision Inverted Front Design: Features an inverted front damper for reduced unsprung weight and improved rigidity at the steering knuckle, delivering unmatched steering feel and responsiveness.

🔧 Professional-Grade Adjustability & Access

• Front Camber Adjustment (Up to -4°): The front pillowball upper mount includes an easily accessible external camber adjustment mechanism (from the wheel well side), allowing for precise tuning without disassembly.

• 30-Step Damping Adjustment (F/R): Offers a wide tuning range. The rear adjustment can be performed without removing the damper from the vehicle.

• Full-Length Ride Height & Preload Adjustment: Enables precise corner balancing, optimal center of gravity, and fine-tuning of damper stroke for specific track conditions or driving styles.

🛣️ Dual-Purpose Capability with Track Focus
While primarily designed for circuit performance, HKS engineering ensures the system retains enough compliance for driven-to-track use or aggressive backroad driving, though it is firmly focused on delivering maximum mechanical grip and feedback.

Technical Specifications

• Product Name: HIPERMAX R

• Model Code: 80310-AT007

• Compatibility: Toyota GR Corolla (GZEA14H, G16E-GTS, December 2022+). Verified on RZ grade. Not confirmed for Morizo Edition.

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

• Construction: Front Inverted / Rear Upright Monotube

• Upper Mount: Front & Rear Pillowball (Front with external camber adjustment)

• Full-Kit Spring Rates:

  • Front: 137 N/mm (14.0 kgf/mm)

  • Rear: 196 N/mm (20.0 kgf/mm)

• Key Feature: Includes proven Fuji Speedway circuit damper and alignment setup data.

Performance Philosophy

• Goal: To provide the highest level of chassis control, predictability, and driver feedback for circuit driving and competitive use, with enough robustness for driven transport. The focus is on limit exploration, ultimate grip, and lap time consistency.

• Focus: The definitive coilover for the track-focused GR Corolla. It is designed for owners who regularly visit circuits, participate in time attack, or drive at ten-tenths on challenging roads, and who are willing to pair it with aggressive tires and alignment to fully realize its potential.

■ Configuration diagram

Installation & Tuning Notes

• 🔧 Professional Installation, Alignment, & Corner Balancing REQUIRED
  To achieve the intended performance and safety, installation must be performed by a professional competition shop. A precision performance alignment and corner balance are not optional—they are critical to realizing the system’s capabilities and preventing damage or interference.

• ⚠️ Critical Setup & Compatibility Warnings

  • Aggressive Fitment Required: The tested setup uses very wide 10J wheels with 265-section tires. This level of fitment is likely necessary to avoid interference, especially with the recommended aggressive negative camber.

  • Clearance Warning: HKS notes that setting the front case length to 292mm or less risks tire-to-fender contact at full bump. Careful test fitting and bump travel management are essential.

  • Use Provided Data: The Fuji Speedway damper, ride height, and alignment settings are the blueprint for performance. Deviating requires a clear understanding of the trade-offs.