HKS 31019-AN012 Hi-Power Silent Exhaust System SUS304 Stainless Steel JDM

The HKS Hi-Power Exhaust System (Part# 31019-AN012) is a performance exhaust system inspired by HKS's extensive endurance and GT racing heritage in Japan. Engineered for both turbocharged and naturally aspirated applications, this system features a race-derived offset muffler and piping layout that maximizes exhaust flow and delivers measurable high-RPM power gains.

Key Features:

• Race-inspired offset muffler and piping design for optimized exhaust flow path
• Eliminates unnecessary bends to create the straightest possible exhaust routing
• Improves exhaust velocity for enhanced mid-range boost response on turbocharged engines
• Supports increasing engine tuning levels on naturally aspirated applications
• Silent Hi-Power version available — features a built-in inner silencer within the muffler for reduced cabin noise
• Muffler and tip assemblies constructed from SUS304 stainless steel for corrosion resistance and long-term durability
• JDM Special Order application

The less restrictive internal design of the HKS Hi-Power exhaust promotes greater exhaust flow capacity across the RPM range. For turbocharged platforms, the smoother, larger-diameter flow path enhances spool characteristics and top-end power. This system is part of HKS's broader Hi-Power lineup, sharing construction standards with their Drager series, including premium SUS304 stainless steel muffler bodies and polished tip assemblies.