Fitment Information Infiniti Q60 CV37 VR30DDTT (2017, 2018, 2019, 2020, 2021, 2022) Emissions Compliance HKS exhaust systems maintain all emissions equipment intact without any alterations, replacements, or modifications. Specs & Features Style: HP(Titan) (FULL DUAL)  Exhaust System Type: Catback  Exhaust Tubing Material: SUS304 High quality stainless Exit Location: Single Rear Main Tubing Diameter:  60mm(45mm)⇒ Approx. 67.5mm Tip Finish: Silver  Tip Outlet Diameter: 119mm x L=140mm Titanium Tips Close Noise Level: Stock:  78dB HKS:  CLOSE: 84dB / OPEN: 88dB Silent Chamber: Some vehicles come with a silent chamber feature. This helps reduce low-frequency noise inside the cabin, making for a quieter ride. Plus, it doesn't affect the performance of your vehicle. JASMA Approved: This product has been approved by JASMA, ensuring it meets quality standards. Durable Material: Made from SUS304 material, this product is not only durable but also enhances the appearance of your vehicle. Advantex Glass Wool: Utilizes proven Advantex glass wool, known for its continuous fiber structure, for enhanced sound insulation. Lightweight Design: Features hollow hooks and pressed flanges in some models to reduce weight without compromising performance. Improved Inner Structure: The silencer's inner structure has been redesigned to boost both performance and appearance, giving you the best of both worlds. Product Description HKS's flagship model features advanced exhaust technology for improved performance. Its full dual layout independently manages both engine banks, eliminating performance drops caused by exhaust interference, allowing smooth high RPM operation. Additionally, a balance pipe stabilizes exhaust sound and boosts torque at low RPM. With a weight reduction of approximately 13%, the Full Dual Muffler weighs around 26kg, enhancing durability and appearance with SUS304 and titanium materials. This model is "JASMA" approved and utilizes proven "Advantex * glass wool" for superior performance. Redline360 sells only genuine and authentic HKS products.