SKU: 3306-RA071 | UPC: 4957266923467
HKS 120Hiper Inner Silencer Assy for 2003-2008 Nissan 350Z & Infiniti G35
The HKS 120Hiper Inner Silencer Assy installs inside compatible HKS mufflers on 2003-2008 Nissan 350Z and Infiniti G35 models. It lowers interior exhaust drone and cabin noise for comfortable daily driving and highway use without choking power delivery or deep tone. Crafted by HKS Japan, this assembly delivers refined sound control paired with sustained performance gains from your full exhaust setup.
Key Features
- Stainless Steel Build: SUS304 perforated pipe and mesh with sound-absorbing material resists corrosion and heat for long-term reliability in demanding conditions.
- Noise Reduction: Drops sound levels by up to 7dB at cruising speeds to minimize drone while preserving aggressive exhaust note under throttle.
- Flow-Optimized Design: Maintains backpressure and scavenging efficiency to support horsepower and torque from HKS exhaust systems.
- Direct Fitment: Precision-shaped at 120mm diameter to slide seamlessly into HKS Hiper muffler series without modifications.
- Lightweight Construction: Weighs just 1.3kg (2.9 lbs) to avoid adding unnecessary mass to your rear exhaust section.
Product Notes
- Exclusively compatible with HKS Silent Hi-Power 120R and Hiper series mufflers (check your muffler inlet size).
- Removes easily for track days when maximum flow and volume are needed.
- Packages in a compact box measuring 14 x 6 x 6 inches for easy handling and storage.
Installation Notes
- Professional installation recommended.
- Remove muffler tip section, insert silencer assembly, and secure with factory clips in under 15 minutes.
- Compatible with all stock and HKS hangers. no drilling or welding needed.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2003-2008 | Nissan | 350Z | Base, Enthusiast, Touring, Track, Grand Touring, Nismo |
| 2003-2007 | Infiniti | G35 | Base, Sport, Coupe |
| 2008 | Infiniti | G37 | Base, Sport |
Why Choose HKS?
- Motorsport-proven designs from decades of Super GT and rally development.
- Exact tolerances from advanced Japanese manufacturing ensure perfect integration.
- Performance parts built for enthusiasts demanding reliability and sound refinement.
Frequently Asked Questions
- Q: Will this fit my 2006 Nissan 350Z with HKS Hi-Power muffler?
A: Yes, it matches the 120mm inlet on HKS Silent Hi-Power 120R S-Line and similar Hiper mufflers for Z33 chassis models. - Q: What material is used in the silencer?
A: High-grade SUS304 stainless steel tube with fiberglass packing and mesh for heat resistance up to 800°C. - Q: Does HKS offer a warranty on this part?
A: Backed by HKS 1-year limited warranty against manufacturing defects when installed properly.
Shipping & Handling
- Method: UPS Ground or FedEx Home Delivery
- Availability: In stock – ships same or next business day
- Packaging: Original HKS box, 14 x 6 x 6 inches
- Weight: 2.9 lbs
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