{"product_id":"hks-120hiper-inner-silencer-assy","title":"HKS 120Hiper Inner Silencer Assy","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e3306-RA071\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 4957266923467\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eHKS 120Hiper Inner Silencer Assy for 2003-2008 Nissan 350Z \u0026amp; Infiniti G35\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless Steel Build:\u003c\/strong\u003e SUS304 perforated pipe and mesh with sound-absorbing material resists corrosion and heat for long-term reliability in demanding conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise Reduction:\u003c\/strong\u003e Drops sound levels by up to 7dB at cruising speeds to minimize drone while preserving aggressive exhaust note under throttle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow-Optimized Design:\u003c\/strong\u003e Maintains backpressure and scavenging efficiency to support horsepower and torque from HKS exhaust systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Fitment:\u003c\/strong\u003e Precision-shaped at 120mm diameter to slide seamlessly into HKS Hiper muffler series without modifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight Construction:\u003c\/strong\u003e Weighs just 1.3kg (2.9 lbs) to avoid adding unnecessary mass to your rear exhaust section.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eExclusively compatible with HKS Silent Hi-Power 120R and Hiper series mufflers (check your muffler inlet size).\u003c\/li\u003e\n\u003cli\u003eRemoves easily for track days when maximum flow and volume are needed.\u003c\/li\u003e\n\u003cli\u003ePackages in a compact box measuring 14 x 6 x 6 inches for easy handling and storage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended.\u003c\/li\u003e\n\u003cli\u003eRemove muffler tip section, insert silencer assembly, and secure with factory clips in under 15 minutes.\u003c\/li\u003e\n\u003cli\u003eCompatible with all stock and HKS hangers. no drilling or welding needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2003-2008\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e350Z\u003c\/td\u003e\n\u003ctd\u003eBase, Enthusiast, Touring, Track, Grand Touring, Nismo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2003-2007\u003c\/td\u003e\n\u003ctd\u003eInfiniti\u003c\/td\u003e\n\u003ctd\u003eG35\u003c\/td\u003e\n\u003ctd\u003eBase, Sport, Coupe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2008\u003c\/td\u003e\n\u003ctd\u003eInfiniti\u003c\/td\u003e\n\u003ctd\u003eG37\u003c\/td\u003e\n\u003ctd\u003eBase, Sport\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose HKS?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMotorsport-proven designs from decades of Super GT and rally development.\u003c\/li\u003e\n\u003cli\u003eExact tolerances from advanced Japanese manufacturing ensure perfect integration.\u003c\/li\u003e\n\u003cli\u003ePerformance parts built for enthusiasts demanding reliability and sound refinement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will this fit my 2006 Nissan 350Z with HKS Hi-Power muffler?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes, it matches the 120mm inlet on HKS Silent Hi-Power 120R S-Line and similar Hiper mufflers for Z33 chassis models.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material is used in the silencer?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e High-grade SUS304 stainless steel tube with fiberglass packing and mesh for heat resistance up to 800°C.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Does HKS offer a warranty on this part?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Backed by HKS 1-year limited warranty against manufacturing defects when installed properly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e UPS Ground or FedEx Home Delivery\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock - ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Original HKS box, 14 x 6 x 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.9 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":40271646916687,"sku":"HKS3306-RA071","price":60.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/hks-120hiper-inner-silencer-assy-hks.jpg?v=1768435173","url":"https:\/\/www.blackopsautoworks.com\/products\/hks-120hiper-inner-silencer-assy","provider":"Black Ops Auto Works","version":"1.0","type":"link"}