The HKS HIPERMAX S fundamentally redefines “driving comfort” for the Honda S2000 AP2, transforming the suspension experience beyond mere fun or basic comfort to create a sophisticated, composed, and refined driving character suitable for diverse environments.

Evolved from the MAX4GT 20SPEC foundation and refined through extensive real-world testing, this coilover system prioritizes early damping intervention and stable suspension behavior—effectively controlling body movement at its inception while eliminating unnecessary harshness at higher speeds.

With carefully calibrated damping characteristics that prevent both breakdown and sudden buildup, the HIPERMAX S delivers exceptional ride quality without sacrificing the S2000’s inherent sporting character, making it ideally suited for everything from city commuting to winding road enjoyment and occasional track day participation.

Product Highlights

🛋️ Redefining “Driving Comfort” Through Sophisticated Engineering
The HIPERMAX S philosophy transcends conventional comfort-focused suspension by delivering refined, stable, and composed driving dynamics that enhance both daily usability and spirited enjoyment. Through faster damping response than the previous 20SPEC model, this system intervenes earlier in body movement cycles—effectively controlling motion before it develops while maintaining plushness over imperfections—creating a driving experience that feels both sophisticated and engaging rather than merely soft or isolated.

⚡ Optimized Damping Characteristics for Balanced Performance
Featuring carefully calibrated damping forces (front: 1535N rebound/407N compression; rear: 898N rebound/329N compression at 0.1 m/sec) with precisely tuned valve sizing and stacking methodology, the HIPERMAX S achieves exceptionally smooth transition characteristics. This engineering prevents both damping breakdown under rapid inputs and sudden force buildup over sharp impacts, resulting in predictable, progressive behavior that instills confidence across varied road conditions and driving styles.

🔧 Refined Evolution from Proven MAX4GT 20SPEC Foundation
Building upon the established performance of the MAX4GT 20SPEC platform, the HIPERMAX S incorporates significant refinements identified through extensive real-world testing. The enhanced damping response and revised valving eliminate the unnecessary high-speed harshness sometimes associated with performance suspension while improving body control during transitional maneuvers—creating a more complete and versatile suspension solution.

🎯 Versatile Performance Across Diverse Driving Environments
Engineered for comprehensive usability rather than singular focus, the HIPERMAX S excels across the driving spectrum—from relaxed city commuting to enthusiastic winding road exploration and occasional track day participation. The balanced 98 N/mm (10.0 kgf/mm) spring rates combined with sophisticated damping provide sufficient support for spirited driving while maintaining exceptional compliance for daily use, eliminating the compromise typically associated with dual-purpose suspension systems.

Technical Specifications

Product Name: HIPERMAX S

Model Code: 80300-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: Rubber mounts front and rear for reduced NVH transmission

• Adjustment Type: Full-length ride height adjustment

• Damping Force (at 0.1 m/sec): Front: 1535N rebound / 407N compression | Rear: 898N rebound / 329N compression

• Wire Adjustment: Available for rear dampers (left side)

Spring System:

• Spring Rates: 98 N/mm (10.0 kgf/mm) front and rear (full kit)

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

• Helper Springs: 19.8 N/mm front and rear

• Free Length: 200mm front, 170mm rear

Vehicle Height & Adjustment Ranges:

• Shipment Settings: Front: 640mm, Rear: 644mm (fender to ground)

• Adjustment Range: Front: 592-669mm, Rear: 619-672mm

• Damper Stroke: Front: 43mm extension / 44mm compression | Rear: 51mm extension / 48mm compression

• Case Length Range: Front: 405-442mm, Rear: 282-318mm

■ Vehicle height information

Performance & Engineering Philosophy

Goal: To redefine driving comfort for the S2000 through sophisticated suspension engineering that delivers refined, composed dynamics suitable for diverse environments—creating a suspension system that enhances both daily usability and spirited enjoyment without compromise to either aspect.

Focus: Early damping intervention for superior body control; smooth transition characteristics without harshness or breakdown; versatile performance across city, winding road, and occasional track use; and refined evolution from proven platform foundation through extensive real-world validation.

Installation & Tuning Considerations

🔧 Professional Installation & Alignment Recommended
While designed for straightforward installation, professional setup ensures optimal ride height balance, proper preload adjustment, and appropriate alignment settings. The comprehensive technical data provides precise starting points that should be respected to achieve the intended performance characteristics.

⚠️ Critical Setup & Adjustment Notes:

• Initial Settings: 15th position damping adjustment (shipment setting) provides balanced starting point for most driving

• Height Limitations: Extreme lowering beyond 592mm front / 619mm rear may cause interference and is not covered by warranty

• Spring Rate Options: +20 N/mm (+2 kgf/mm) spring rate increases available at purchase for more focused performance applications

• Alignment Reference: Test alignment (front: -2°00′ camber, 1mm toe-out; rear: -1°47′ camber, 2mm toe-in) provides performance-oriented baseline

🎯 Application-Specific Usage Guidance:

• City & Daily Driving: Utilize middle adjustment range (10-20 positions) for optimal comfort and compliance

• Spirited Backroad Use: Adjust toward firmer settings (5-10 positions) for enhanced body control during enthusiastic driving

• Track Day Participation: Consider spring rate increase option and firmer damping settings for sustained high-load operation

• Progressive Refinement: The wide 30-step adjustment range allows precise tuning to personal preference and specific conditions

■ Kit information

● Full kit setting spring

● Damper specs

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

● Setting data

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

■ Test vehicle information

* Measured by our company.

Strategic Advantages & Refinement Focus

🔄 Comprehensive Rather Than Compromised Approach
The HIPERMAX S demonstrates that sophisticated suspension engineering can deliver both refined comfort and engaging dynamics without requiring compromise—addressing the complete driving experience rather than optimizing for a single aspect at the expense of others.

📈 Evolutionary Refinement Through Real-World Validation
Extensive testing and refinement from the MAX4GT 20SPEC foundation ensure that improvements address genuine driving needs rather than theoretical preferences—resulting in a suspension system that performs authentically across diverse conditions rather than excelling only in controlled environments.

🎚️ Precise Tuning Capability Without Complexity
The 30-step adjustment range combined with comprehensive technical data provides extensive tuning capability for enthusiasts while maintaining accessibility—allowing precise customization without requiring specialized knowledge or equipment.