HKS Hi-Power 120mm Inner Muffler Silencer Insert 3306-RA071

Vehicle Fitment

• Universal - for HKS exhausts with a 120mm Hi-Power exhaust tip

Fitment Notes

• Does not fit HKS Carbon-Ti mufflers, with the exception of part number 3112-EX006

Features

• Inserts into the tip section of the muffler to reduce sound output for street driving
• Easy to remove for maximum performance and sound on track days
• Average of 7dB reduction in exhaust noise for most applications
• SUS304 stainless steel construction, unpainted
• Includes M6 mounting bolts and nuts
• Not recommended for use during full-throttle, high-performance driving - remove before track use

Specifications

• Diameter: 120mm
• Material: SUS304 stainless steel
• Noise Reduction: ~7dB average

Included Components

• 1x Inner Silencer
• M6 Bolts and Nuts

Product Description

The HKS 3306-RA071 is a 120mm inner muffler silencer insert designed to quiet down an HKS Hi-Power exhaust for daily street driving, sliding directly into the 120mm tip section and secured with the included M6 hardware. Made from SUS304 stainless steel, it delivers an average 7dB reduction in exhaust noise without a noticeable loss in power.

The silencer is easy to remove for track days or spirited drives when full exhaust volume and performance are wanted, then reinserted for a quieter commute or to keep the neighbors happy. It fits any HKS exhaust with a matching 120mm tip, with the exception of Carbon-Ti mufflers (except part #3112-EX006, which is compatible).