Description

The HKS silent Hi-Power (TYPE-H) represents a sophisticated performance exhaust solution. It is engineered specifically for the Honda S2000 AP2 chassis. This solution delivers enhanced flow characteristics and refined acoustic properties. Moreover, it maintains exceptional civility and near-stock sound levels.

As a made-to-order production item, this system combines the performance heritage of HKS’s Hi-Power series with specialized silencing technology. It creates an exhaust that prioritizes driving refinement and daily usability. Yet, it does not sacrifice the quality engineering and durability for which HKS is renowned.

With proximity sound measurements of L94/R93 dB—actually slightly quieter than the factory system’s 95 dB—this exhaust demonstrates meaningful performance enhancement. Importantly, it shows that this can coexist with exceptional noise control. Moreover, it maintains street-friendly manners.

Product Highlights

🔇 Advanced Silencing Technology with Superior Acoustic Control
Featuring specialized silencing engineering within the Hi-Power (TYPE-H) design, this system achieves remarkable acoustic refinement. Measured sound levels are lower than factory specifications—93-94 dB versus 95 dB stock.

This counterintuitive achievement of reduced decibel output alongside performance enhancement represents sophisticated exhaust tuning. It prioritizes sound quality and civil refinement over mere volume increase. Therefore, it is ideal for enthusiasts who value driving enjoyment without excessive auditory attention.

🎯 Made-to-Order Production for Exceptional Quality Assurance
Produced as a made-to-order item rather than mass inventory, each silent Hi-Power system receives particular attention to manufacturing precision. Quality validation is also a priority. This production approach ensures optimal fitment and consistent performance characteristics. Furthermore, it guarantees the meticulous craftsmanship appropriate for a premium component intended for discerning S2000 owners.

🔧 Precision S304 Stainless Steel Construction with Y-Pipe Optimization
Utilizing premium S304 stainless steel throughout its mandrel-bent construction, this system guarantees long-term corrosion resistance and thermal durability. Additionally, the specifically engineered Y-pipe bifurcation design optimizes exhaust gas scavenging between the dual exhaust paths. The dual 60-50mm intermediate piping maintains ideal exhaust velocity for performance gains. Meanwhile, the specialized muffler design provides the acoustic refinement that defines the “silent” characteristic.

📐 Practical Ground Clearance for Real-World Versatility
With 135mm of ground clearance at the exhaust system’s lowest point (measured on standard suspension), this design maintains excellent usability for daily driving. It is also suitable for spirited backroad use and occasional track participation. This thoughtful clearance specification accommodates mild lowering modifications. It ensures the exhaust remains protected from common road hazards and driveway approaches.

Technical Specifications

Product Name: silent Hi-Power (TYPE-H)

Model Code: 32016-AH004

Certification Number: 03S00881

Production Method: Made-to-order manufacturing

Vehicle Compatibility: Honda S2000 AP2 (2005-2009, F22C engine)

Construction & Materials:

• Primary Material: S304 stainless steel

• Muffler Configuration: Hi-Power TYPE-H with specialized silencing technology

• Tailpipe Diameter: 94mm left and right

• Intermediate Piping: Dual 60-50mm configuration (widest flow sections)

• Application Area: Y-pipe bifurcation and complete cat-back system

Performance & Dimensions:

• Proximity Exhaust Sound: HKS: L94/R93 dB | Factory: 95 dB

• Ground Clearance: 135mm at lowest exhaust point (standard suspension reference)

• Production Approach: Made-to-order for optimal quality control and fitment precision

Installation & Fitment Notes:

• Mounting Components: Hooks, brackets, and stays subject to revision as part of continuous improvement

• Suspension Compatibility: Primary data from standard suspension with validation on selected lowering configurations

• Clearance Consideration: Minimum ground clearance measured specifically at exhaust components, potentially differing from overall vehicle clearance with modified suspension

Performance & Engineering Philosophy

Goal: To deliver refined performance enhancement through optimized flow characteristics and specialized acoustic engineering—creating an exhaust system that improves engine breathing and driving enjoyment while maintaining exceptional civility and near-stock noise levels for versatile real-world usability.

Focus: Advanced silencing technology integrated within proven Hi-Power architecture; made-to-order production ensuring premium quality and precise fitment; practical ground clearance for diverse driving applications; and balanced performance characteristics that complement rather than transform the S2000’s inherent driving character.

Installation & Application Considerations

🔧 Professional Installation Recommended for Optimal Results
Given the made-to-order nature and specialized silencing technology, professional installation ensures proper alignment, secure mounting, and optimal performance realization. The Y-pipe bifurcation design requires precise positioning to maintain equal exhaust flow between left and right pathways for balanced performance and sound characteristics.

⚠️ Critical Fitment & Usage Notes:

• Production Timeline: Made-to-order manufacturing may involve longer lead times compared to inventory items but ensures fresh production and precise specification adherence

• Sound Character vs. Volume: While decibel measurements show reduced output, the exhaust note quality and character differ meaningfully from factory—providing a more refined, deeper tone without increased volume

• Suspension Modification Effects: While 135mm clearance accommodates mild lowering, significant suspension alterations require additional clearance verification, particularly with aggressive alignment settings

• Balanced Flow Considerations: The Y-pipe design relies on symmetrical installation to maintain equal flow distribution between left and right exhaust paths

🎯 Primary Performance & Experience Benefits:

• Acoustic Refinement: Noticeably improved exhaust note quality with actual decibel reduction compared to factory—a rare achievement in performance exhaust design

• Flow Optimization: Engineered Y-pipe bifurcation improves exhaust scavenging for potential power gains while maintaining civil acoustic properties

• Quality Assurance: Made-to-order production ensures fresh manufacturing, precise tolerances, and optimal fitment for long-term satisfaction

• Versatile Usability: Excellent ground clearance and refined sound characteristics suit daily driving, long-distance travel, and spirited backroad enjoyment equally well

Strategic Advantages & Design Rationale

🔊 Counterintuitive Acoustic Achievement
By producing an exhaust system actually quieter than factory, while delivering performance benefits, HKS challenges conventional aftermarket assumptions. These assumptions associate performance with increased volume. This system demonstrates that sophisticated engineering can deliver enhancement without compromise to civility.

🏭 Made-to-Order Quality Philosophy
The decision to produce this system as a made-to-order item reflects commitment to optimal quality control. It ensures precise fitment and fresh manufacturing. This approach prioritizes customer satisfaction and performance over inventory convenience. It prioritizes quality over mass production efficiencies.

⚖️ Balanced Performance Refinement
The silent Hi-Power occupies a unique position in the performance spectrum. It delivers meaningful flow improvement and enhanced driving experience. Additionally, it maintains exceptional noise control and daily usability. This appeals to enthusiasts who value refined progress over transformative change.