HKS 3306-RA073 Inner Muffler Silencer 94mm New Wagon Tip Black SUS304 Universal

Vehicle Fitment

• Universal - fits any HKS exhaust system equipped with a 94mm New Wagon (WG/M) style muffler tip

Fitment Notes

• This silencer is designed for HKS muffler tips with the 94mm New Wagon (WG/M) tip profile - it is NOT interchangeable with the 94mm Hi-Power tip silencer (3306-RA072), which is shaped for the older Hi-Power round tip design; verify your muffler tip style matches the New Wagon profile before ordering
• Tip inner diameter must be 94mm for this silencer to fit correctly - if your muffler uses a different tip diameter (115mm, 120mm, etc.) or tip style, a different inner silencer part number is required
• The silencer bolts onto pre-existing M6 mounting holes in the muffler tip - no drilling or modification is required; if your muffler tip does not have pre-drilled M6 holes, the silencer may not be able to be installed without adding hardware
• Removal is straightforward - the silencer is designed to be removed when noise reduction is not needed, such as for track use where maximum exhaust flow is preferred
• Finish is black painted - color is not raw/silver; note that heat from the exhaust may affect paint appearance over time

Features

• Reduces exhaust sound output by approximately 7 dB on average - a 7 dB reduction is perceptible as roughly half the perceived loudness, making this a meaningful noise reduction for street use, noise-regulated environments, or situations where a quieter exhaust character is temporarily desired without replacing the exhaust system
• Bolt-on installation using the pre-drilled M6 mounting holes in the muffler tip - the silencer inserts into the tip opening and is secured with the included M6 bolts and nuts without tools beyond a basic socket set, and removed equally simply when maximum flow is needed
• SUS304 stainless steel construction resists the corrosion, condensation, and thermal cycling inherent in the muffler tip environment - the same alloy used in the surrounding HKS exhaust system
• Black painted finish provides a stealth appearance inside the tip opening, maintaining a clean visual presentation at the exhaust exit with a color that complements most muffler finishes
• Preserves reversibility - the exhaust system itself requires no permanent modification to install or remove this silencer; the full exhaust performance is available again immediately upon removal

Specifications

• Part Number: 3306-RA073
• HKS Product Name: INNER SILENCER D94 WG/M
• Compatible Tip Diameter: 94mm
• Compatible Tip Style: New Wagon (WG/M) tip profile
• Material: SUS304 stainless steel
• Finish: Black painted
• Fitment: Universal (for compatible HKS 94mm New Wagon tip exhaust systems)
• Average Sound Reduction: ~7 dB
• Mounting: M6 bolt-on (uses pre-drilled tip holes)
• Quantity: 1 inner silencer

Included Components

• 1x Inner muffler silencer, 94mm, black painted, SUS304
• M6 bolts and nuts for installation

Product Description

The HKS 3306-RA073 is the inner muffler silencer for HKS exhaust systems equipped with the 94mm New Wagon (WG/M) style tip - designated by HKS as the INNER SILENCER D94 WG/M. It is distinct from the 3306-RA072, which is shaped for the 94mm Hi-Power tip profile; although both are 94mm units, the internal geometry of the silencer body is matched to the specific tip style it is designed for, and they are not interchangeable. Buyers should confirm their muffler's tip style matches the New Wagon profile before ordering.

Installation uses the pre-drilled M6 mounting holes present in HKS muffler tips - the silencer body slides into the tip opening and is secured with the included M6 hardware. No modification to the exhaust system is required, and removal is equally simple, making this a fully reversible noise management solution. The average sound reduction is approximately 7 dB, which represents a perceptible halving of apparent loudness - meaningful for use in noise-regulated environments, residential areas, or situations where a less aggressive exhaust character is temporarily preferred. For track use or any situation where maximum exhaust flow is needed, the silencer is simply unbolted and removed.

The silencer is constructed from SUS304 stainless steel with a black painted finish, consistent with the finish options offered across the HKS inner silencer range for this generation of tips. The black finish provides a clean visual presentation inside the tip and complements the exterior finish of most HKS muffler systems. M6 bolts and nuts are included.