HKS 31006-AN017 Hi-Power 409 Exhaust System for 1989-1998 Nissan S13/S14 SR20DET

Vehicle Fitment

• 1989-1998 Nissan 180SX (S13/S14), SR20DET
• 1989-1994 Nissan Silvia (S13), SR20DET
• 1989-1993 Nissan 240SX (S13), SR20DET

Features

• HKS Hi-Power 409 exhaust system engineered for performance flow
• Straight-through muffler design to reduce back pressure and increase exhaust velocity
• Race-inspired offset muffler layout for optimized flow and power delivery
• Durable stainless steel construction for corrosion resistance and strength
• Large diameter piping and tip for enhanced high-RPM performance
• Performance-tuned sound with aggressive yet usable tone
• Direct bolt-on installation with included hardware
• Improves throttle response and mid-range torque on turbo SR20DET engines

Specifications

• Part Number: 31006-AN017
• Series: Hi-Power 409 performance exhaust
• Material: SUS304 stainless steel muffler and tip, SUH409 piping
• Piping Diameter: 85 mm
• Tip Diameter: 120 mm
• Exhaust Type: Cat-back / rear section performance exhaust
• Engine Compatibility: Nissan SR20DET turbocharged I4
• Fitment Years: 1989-1998

Included Components

• 1x HKS Hi-Power 409 exhaust system (cat-back / rear section)
• 1x Muffler assembly with 120 mm tip
• Exhaust mounting hardware (bolts, gaskets, hangers)

Product Description

The HKS 31006-AN017 Hi-Power 409 Exhaust System is a performance-oriented cat-back exhaust designed for Nissan vehicles equipped with the SR20DET turbocharged engine, including 180SX, Silvia, and 240SX models from the late 1980s through the 1990s. This exhaust delivers a straighter exhaust path with fewer bends, enhancing exhaust flow and improving power delivery, especially at mid-range and high RPM. The large 120 mm tip and 85 mm piping help maximize flow while giving your vehicle a distinct, aggressive exhaust note suited to both street and track use.

Constructed with a combination of SUS304 stainless steel for the muffler and SUH409 for the piping, the Hi-Power 409 system is built for long-term durability and resistance to corrosion. The direct bolt-on design means installation is straightforward with included hardware, making it a popular upgrade for enthusiasts seeking both performance gains and a more engaging driving experience. Whether you're enhancing throttle response or seeking a more pronounced exhaust sound, this HKS Hi-Power exhaust system is a high-quality upgrade for SR20DET-powered Nissan S13/S14 and 240SX platforms.