The HKS HIPERMAX R represents the pinnacle of performance suspension engineering for the Honda S2000 AP2, delivering unprecedented levels of both circuit capability and road compliance through revolutionary damper and spring technology.

Designed as the definitive “multi-performer,” this coilover system transcends conventional suspension compromises by integrating newly developed SRF (Super Response Fluid) dampers with exclusive LVS (Low Vibration Spring) technology—achieving exceptional control and feedback while maintaining remarkable ride comfort across diverse driving environments.

Developed and validated through extensive testing at Fuji Speedway with competition-oriented specifications including roll cage, front tower bar, and mechanical LSD, the HIPERMAX R provides professional-grade performance with the versatility to excel on circuit, winding roads, and daily driving scenarios.

Product Highlights

🔬 Revolutionary SRF & LVS Technology for Unprecedented Performance
Integrating the newly developed Super Response Fluid (SRF) dampers with exclusive Low Vibration Spring (LVS) technology, the HIPERMAX R achieves a breakthrough in suspension performance that defies conventional trade-offs between comfort and control. The SRF fluid provides exceptional consistency and response across temperature variations while the LVS springs utilize a specialized retainer system that cancels bending loads and absorbs torsion—enabling the spring to perform optimally in all driving situations without compromising compliance or comfort.

⚙️ Circuit-Validated Performance with Real-World Versatility
Developed through extensive testing at Fuji Speedway with competition-oriented specifications—including rear roll cage, front tower bar, and mechanical LSD—the HIPERMAX R delivers authentic circuit performance while maintaining surprising road compliance. The test vehicle, equipped with high-grip ADVAN A052 tires and aggressive alignment settings, demonstrated exceptional controllability and seemingly limitless rear grip, providing a driving experience that balances precision with accessibility.

🎛️ Comprehensive Adjustability with Professional Calibration
Featuring 30-step damping adjustment front and rear with an exceptionally wide effective range, full-length ride height adjustment, and the capability for spring rate changes at time of purchase, the HIPERMAX R provides extensive tuning flexibility. The recommended Fuji Speedway circuit settings (front: 7th position, rear: 8th position) serve as a professional baseline, while the comprehensive adjustment range accommodates everything from aggressive track use to refined road driving.

⚖️ Optimized Weight Distribution & Vehicle Dynamics
With carefully calibrated spring rates (157 N/mm / 16.0 kgf/mm front and rear) and extensive vehicle height adjustability (615-677mm front, 613-677mm rear), the HIPERMAX R optimizes the S2000’s weight distribution and dynamic behavior. The inclusion of helper springs (19.8 N/mm) maintains proper damper stroke across the adjustment range while specially colored insulators on spring seats improve slip during adjustments and contribute to a distinctive visual presentation.

Technical Specifications

Product Name: HIPERMAX R

Model Code: 80310-AH001

Vehicle Compatibility: Honda S2000 AP2 (F22C, 05/2005 – 09/2009)

Damper Configuration:

• Adjustment: 30-step damping force adjustment (front & rear)

• Construction: Upright monotube design (front & rear)

• Upper Mounts: Pillowball mounts front and rear

• Adjustment Type: Full-length ride height adjustment

• Damping Force (at 0.1 m/sec): Front: 1515N rebound / 441N compression | Rear: 1152N rebound / 373N compression

• Wire Adjustment: Available for rear dampers

Spring System:

• Spring Rates: 157 N/mm (16.0 kgf/mm) front and rear (full kit)

• Spring Type: Straight winding with ±20 N/mm (±2 kgf/mm) change capability

• Helper Springs: 19.8 N/mm front and rear

• Free Length: 170mm front, 150mm rear

Vehicle Height & Adjustment Ranges:

• Shipment Settings: Front: 645mm, Rear: 649mm (fender to ground)

• Adjustment Range: Front: 615-677mm, Rear: 613-677mm

• Damper Stroke: Front: 42mm extension / 45mm compression | Rear: 49mm extension / 50mm compression

• Case Length Range: Front: 402-439mm, Rear: 267-302mm

Warranty: 2-year/40,000km coverage

Performance & Engineering Philosophy

Goal: To create the ultimate multi-performance suspension system that delivers professional-level circuit capability while maintaining exceptional road compliance and versatility—eliminating conventional compromises between competition performance and daily usability through revolutionary fluid and spring technology.

Focus: Integrated performance through SRF damper fluid and LVS spring technology; circuit-validated development with professional baseline settings; comprehensive adjustability for precise tuning across diverse applications; and optimized dynamics that enhance the S2000’s inherent balance while expanding its performance envelope.

Installation & Tuning Considerations

🔧 Professional Installation & Alignment Essential
Given the comprehensive adjustment capabilities and professional calibration requirements, professional installation with precise alignment is strongly recommended. The extensive test data—including specific case lengths, spring set lengths, and winding dimensions—provides a validated starting point that should be respected during initial setup.

⚠️ Critical Setup & Adjustment Notes:

• Circuit Baseline: Fuji Speedway-validated settings (front: 7th position, rear: 8th position) provide professional circuit baseline

• Vehicle Height Limitations: Extreme lowering beyond drivable range may cause interference and is not covered by warranty

• Spring Rate Options: ±20 N/mm (±2 kgf/mm) spring rate changes available at purchase for specific application tuning

• Alignment Requirements: Test alignment (front: -1°40′ camber, 1mm toe-out; rear: -3°08′ camber, 1mm toe-in) represents performance-optimized setup

🎯 Application-Specific Tuning Strategies:

• Circuit Priority: Consider increasing spring rates for sharper cornering and more aggressive acceleration response

• Road Focus: Utilize middle adjustment range (15th position shipment setting) for balanced comfort and control

• Performance Optimization: Match alignment settings to test specifications for maximum grip and predictability

• Progressive Refinement: Utilize the wide 30-step adjustment range to fine-tune behavior to specific tires, tracks, or road conditions

Strategic Advantages & Technical Innovation

🔄 Integrated Technology Rather Than Component Assembly
The synergistic development of SRF fluid specifically for the LVS spring system represents holistic engineering rather than component assembly—creating a suspension system where damper and spring technologies are optimized for mutual performance rather than being independently developed and subsequently matched.

🏁 Authentic Circuit Development Methodology
Testing at Fuji Speedway with competition-oriented specifications (roll cage, tower bar, mechanical LSD) ensures the suspension is validated under authentic performance conditions rather than simplified test scenarios, providing confidence that circuit capabilities are genuine rather than theoretical.

📊 Comprehensive Data Transparency
The publication of extensive technical data—including specific damping forces at defined piston speeds, detailed dimensional specifications, and precise alignment measurements—provides professional-level information for informed setup and tuning rather than relying on generalized recommendations.