HKS 32003-BH004 Hi-Power Catback Exhaust System for 02-06 Acura RSX Type S

Vehicle Fitment

• 2002-2006 Acura RSX Type-S Coupe (K20A/K20A2 engine, 4-door trim not compatible)

Fitment Notes

• Stainless cat-back muffler designed exclusively for RSX Type-S models (DC5 chassis)
• Single rear exit system - not compatible with base RSX or sedan trims
• Install retains factory midpipe; no EVAP or bumper modifications required
• Not CARB- or DOT-approved in some jurisdictions; check local regulations

Features

• Mandrel-bent 65 mm (2.56") piping for maximal exhaust flow
• Polished tip (~115 mm / 4.5") with offset tip design for Type-S bumper clearance
• Aggressive, JASMA-compliant sound signature tuned for performance enthusiasts
• Sound level ~81 dB during close-run; idle ~62 dB (approx. +7 dB over stock)
• Weight: ~13.8 kg - lightweight 304 stainless construction
• Durable SUS304 construction built for longevity
• Hand-fit for precision fitment, ideal under INGS+1 Type-S bumper conversions
• Includes installation hardware and one-year HKS warranty

Specifications

• Part No: 32003-BH004 • Hi-Power Muffler (RSX Type-S exclusive)
• Material: Stainless steel SUS304
• Piping: 65 mm (~2.56") OD center pipe
• Tip Size: ~115 mm (4.5") HP styled tip
• Close-run noise: ~81 dB; Idle: ~62 dB
• Weight: ~13.8 kg per system
• Warranty: 1-year limited from HKS USA

Included Components

• 1x Hi-Power muffler assembly
• 1x 115 mm offset tailpipe
• Mounting hardware and clamps
• Installation guide and warranty card

Product Description

The HKS Hi-Power muffler system (part 32003-BH004) is engineered specifically for the 2002-2006 Acura RSX Type-S (DC5 chassis with K-series engine). Featuring a mandrel-bent 65 mm stainless steel center pipe and high-output muffler design, this system produces a distinctly aggressive JASMA-compliant tone and improved exhaust flow over stock.

With an approximate sound output of 81 dB at close-run and 62 dB at idle, this system provides a sporty presence without excessive in-cabin drone. Crafted from SUS304 stainless steel and weighing only ~13.8 kg, it bolts directly onto the factory midpipe without cutting or modifications, preserving EVAP routing and maintaining OEM ground clearance - even under modified bumpers like INGS+1 Type-S models.

Although not CARB-legal in all states, the Hi-Power system delivers proven performance, race-inspired sound, and precision fit. It includes polished tailpipe, mounting hardware, and full one-year warranty from HKS USA.