HKS introduces the High-dimensional Super Turbo Muffler Debut, combining Exhaust Efficiency & Sound Pressure Reduction. Designed for stock to high-performance vehicles, it meets JASMA standards for performance exhaust sound. With an 85mm straight pipe and optimized layout, it s compatible with upgraded turbines while maintaining stock clearance. Engineered for various driving scenarios, it offers a clear cabin sound, minimizing lower exhaust resonance. Specifically tuned for the RB26 engine, its unique tone varies with throttle input and driving conditions, recommended for GT-R owners. HKS Slotted Tail design, inspired by owl feathers, reduces air friction vibration, lowering sound by approximately 2dB. Through meticulous analysis, it delivers optimal tones both inside and outside the vehicle, eliminating discomforting low frequencies.