HKS Hi-Power 409 Cat-Back Exhaust for 98-05 Skyline ER34 4dr RB25DET

Vehicle Fitment

• May 1998-May 2005 Nissan Skyline ER34 4-Door (RB25DET)

Fitment Notes

• For 4-door ER34 models only

Features

• Draws inspiration from endurance and GT racing in Japan, blending power with an aggressive, race-tuned sound
• Race-inspired offset muffler and piping design eliminates unnecessary bends for a smoother, less restrictive exhaust path
• Large, smooth exhaust flow increases exhaust velocity for improved mid-range boost response and high-RPM power
• Constructed from durable, corrosion-resistant SUS409 stainless steel
• Suitable for both turbocharged and naturally aspirated applications

Specifications

• Muffler Style: Hi-Power 409
• Material: SUS409 stainless steel
• Tip Diameter: 120mm
• Pipe Size: 85mm
• Piece Count: 2
• Sound Level (Stock Ref.): 92 dB (closed)

Included Components

• 1x Hi-Power 409 Cat-Back Exhaust System (2 pieces)

Product Description

The HKS 31006-AN016 is a Hi-Power 409 cat-back exhaust built for the 1998-2005 Nissan Skyline ER34 4-door with the RB25DET engine, drawing design inspiration from endurance and GT racing in Japan. Its race-inspired offset muffler and piping layout eliminate unnecessary bends, producing a smoother, less restrictive exhaust path for improved flow.

The large, smooth exhaust flow increases exhaust velocity, delivering better mid-range boost response and stronger high-RPM power whether the engine is turbocharged or naturally aspirated. Constructed from durable SUS409 stainless steel for long-term corrosion resistance, this 2-piece system is designed specifically for the ER34 4-door chassis for a direct, correct fit.