HKS Hi-Power Catback Exhaust System for 2008-2013 Infiniti G37/Q60 Coupe RWD - 60mm SUS304 Stainless | Dual Muffler | Deep Tone VQ37VHR Performance | JDM Bolt-On

Transform your 2008-2013 Infiniti G37 or Q60 Coupe RWD with the legendary HKS Hi-Power Catback Exhaust System engineered specifically for the VQ37VHR platform to deliver that iconic HKS deep-tone exhaust note and real performance gains without the harsh rasp or cabin drone that plagues cheap systems, because the Hi-Power uses a true 60mm dual-piping layout crafted from premium SUS304 stainless steel with smooth mandrel bends that maintain consistent diameter from the y-pipe back, reducing backpressure and increasing exhaust velocity to unlock a proven 8-12whp and 6-10wtq with improved throttle response and stronger mid-range pull to 7500 RPM, and the sound is pure JDM refinement with a deep, aggressive growl at idle and low RPM that builds into a smooth, exotic VQ wail at wide-open throttle while the dual 4.5" slant-cut, double-wall polished tips and large 115mm oval mufflers are specifically tuned to eliminate the 1800-2500 RPM drone that ruins daily driving on other cat-backs, giving you aggressive tone outside and conversation-level cabin comfort inside, and the entire system is hand TIG-welded with reinforced hangers, robotic mandrel bends, and a polished finish that resists corrosion, heat bluing, and cracking through years of street and track use, and it bolts directly to the factory y-pipe or HKS Dual Resonated Y-Pipe using OEM mounting points with no cutting, welding, or modifications, clearing the G37/Q60 Coupe’s rear diff, sway bar, and chassis braces with perfect tuck and alignment, and the kit includes all multi-layer steel gaskets, Grade 10.9 hardware, and new rubber hangers for a leak-free, rattle-free install that takes 1-2 hours on a lift, and the dual-muffler design with internal HKS flow technology balances volume and tone so you get performance without waking the neighborhood on cold starts, and it pairs perfectly with HKS or aftermarket test pipes, headers, and intakes to complete a full bolt-on VQ exhaust that sounds as good as it performs, so if your G37 or Q60 Coupe RWD sounds stock, feels choked up, and needs that signature HKS deep tone with real-world drivability, the Hi-Power Catback is the gold standard JDM exhaust for unlocking horsepower, exotic sound, and show-quality looks, and every system is jig-welded, pressure-tested, and QC inspected in Japan for perfect fitment, tip alignment, and weld quality so you get the legendary HKS sound and reliability without the warped flanges, drone, or fitment issues you get from knock-off brands.