Description

The HKS Hi-Power SPEC-L II represents a comprehensive performance exhaust system that combines substantial weight reduction and enhanced exhaust efficiency. Furthermore, it offers innovative customization through interchangeable finisher covers specifically designed for the Honda S2000 AP2 chassis.

Engineered with a straight-through internal architecture that minimizes restriction, this system utilizes advanced thin-walled SUS304 stainless steel construction. As a result, it achieves remarkable mass reduction of 30-60% compared to the factory muffler. These changes deliver tangible improvements in driving dynamics and throttle response.

Furthermore, the system introduces a novel customization feature with three optional finisher cover variants (Carbon, Titanium, and Neues Blue Stainless Steel), allowing owners to personalize their exhaust’s visual presentation while maintaining the core performance benefits of the SPEC-L II design.

Product Highlights

⚖️ Significant Weight Reduction for Enhanced Dynamics
Utilizing advanced thin-walled SUS304 stainless steel construction throughout the piping and silencer components, the SPEC-L II achieves dramatic weight savings of 30-60% compared to the factory muffler. This reduction is comparable to premium titanium systems. As a result, this substantial decrease in rear-biased mass directly improves the S2000’s power-to-weight ratio, acceleration response, and chassis balance. The construction maintains the durability and corrosion resistance expected from quality stainless steel.

🌀 Straight-Through Architecture for Optimal Exhaust Efficiency
Featuring an unrestricted straight internal structure that eliminates flow restrictions common in conventional muffler designs, the SPEC-L II significantly improves exhaust gas evacuation and engine breathing. This engineering approach enhances throttle response and potential power gains. It also produces a carefully tuned sporty exhaust note. This complements the F22C engine’s high-revving character without excessive volume or drone.

🎨 Interchangeable Finisher Cover System for Customization
Introducing an innovative modular design, the SPEC-L II features a replaceable finisher cover system that allows owners to personalize their exhaust’s appearance with three distinct options:

• Standard Titanium Cover: Features the unique blue gradation coloration characteristic of heat-treated titanium

• Carbon Fiber Cover (34002-AK011): Maintains the visual aesthetic of previous-generation HKS exhausts

• Neues Blue Stainless Steel Cover (34002-AK017): Offers a distinctive cool-toned visual alternative
  All optional covers share identical dimensions (φ94mm, L=118mm) and pricing, providing accessible customization without performance compromise.

🔬 Premium Construction with Comprehensive Warranty Protection
Manufactured from SUS304 stainless steel with ADUANTEX glass wool sound insulation, the SPEC-L II delivers premium durability and acoustic refinement. Meanwhile, it is backed by a substantial 2-year/30,000km warranty. Therefore, this combination of quality materials, advanced engineering, and manufacturer confidence ensures long-term satisfaction and performance consistency.

Technical Specifications & Compatibility

Primary System: Hi-Power SPEC-L II Exhaust

• Construction: SUS304 stainless steel with thin-walled engineering

• Weight Reduction: 30-60% lighter than factory muffler

• Internal Design: Straight-through architecture for minimal restriction

• Sound Tuning: Model-specific acoustic calibration

• Compliance: JASMA certified for regulatory acceptance

• Warranty: 2-year/30,000km coverage

Optional Finisher Covers (All φ94mm, L=118mm):

1. Carbon Cover (Code: 34002-AK011)

2. Titanium Cover (Code: 34002-AK014) – Standard inclusion

3. Neues Blue Stainless Steel Cover (Code: 34002-AK017)

Special Edition Variant: Hi-Power SPEC-L II THE BLUEST EDITION

• Characteristics: Enhanced blue gradation with specially designed inner tail

• Availability: Limited production quantities

• Visual Enhancement: More pronounced and aesthetically refined blue coloration

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

Performance & Customization Philosophy

Goal: To deliver comprehensive performance enhancement through substantial weight reduction and optimized flow characteristics while introducing unprecedented visual customization capability—creating an exhaust system that improves both driving dynamics and personal expression without compromising quality or reliability.

Focus: Mass reduction through advanced material engineering; unrestricted flow via straight internal architecture; modular visual customization through interchangeable finisher components; and premium construction that supports spirited driving while maintaining street refinement and compliance.

Installation & Customization Considerations

🔧 Finisher Cover Replacement Protocol
The interchangeable finisher system requires specific installation procedures:

• Recommended Method: Muffler removal from vehicle for proper access

• Fastening System: M4 P=0.7 L=6 SUS304 bolts with 2.5mm hex socket

• Thread Security: Mandatory use of medium-strength thread locking agent (e.g., Loctite 243)

• Removal Technique: Heat application (hair dryer recommended) to soften existing thread lock before disassembly

• Compatibility Note: Incompatible with previous-generation Hi-Power SPEC-L or Touring SPEC-L systems

⚠️ Critical Maintenance & Care Instructions:

• Finisher Cleaning: Use only alcohol or thinner with soft cloth; avoid abrasive cleaners that damage surface treatments

• Blue Gradation Preservation: Special care required for titanium and Neues Blue finishes to maintain visual characteristics

• Long-Term Maintenance: Periodic inspection of finisher fasteners recommended due to thermal cycling and vibration

Strategic Advantages & Market Differentiation

🔄 Modular Customization Unprecedented in Performance Exhausts
The interchangeable finisher system represents a novel approach to exhaust personalization—allowing owners to modify visual presentation without replacing the entire system, effectively future-proofing their investment against changing aesthetic preferences.

⚖️ Weight Efficiency Matching Premium Materials
By achieving titanium-comparable weight reduction with stainless steel construction, HKS demonstrates sophisticated engineering that delivers premium performance characteristics without requiring exotic materials, creating exceptional value within the performance exhaust segment.

🔗 System Cohesion Between Performance and Presentation
The integrated design philosophy ensures that visual customization options complement rather than compromise performance characteristics. It maintains optimal exhaust flow and acoustic properties. This holds true regardless of selected finisher variant.