STI Performance Muffler

The Subaru ST44300V2000 is a high-performance, all-stainless steel muffler featuring a buffed finish and dual slash-cut tailpipes (95mm diameter each side) for the WRX S4 VB. STI has meticulously tuned this exhaust system to provide a refined and pleasant sound profile that befits the WRX S4, while also achieving a weight reduction of approximately 1.8kg over the stock unit. This muffler is engineered with STI's unique tuning to ensure it operates safely and does not negatively impact the power unit or exhaust system. It is Ministry of Land, Infrastructure, Transport and Tourism replacement muffler pre-certification system approved, ensuring compliance with relevant regulations. Installation requires the separate purchase of two Subaru genuine gaskets (part number 44011SG010) and four self-locking nuts (part number 902330011). The included hanger cushions (5 pieces) should be used for mounting the muffler on both the left and right sides, with two cushions per side and one for the EPR. This performance muffler is specifically designed for the WRX S4 (VBH) and is compatible with various trim levels including GT-H, GT-H EX, STI Sport R, and STI Sport R EX across different model years (Applicable Model Symbols: B, C, D, and E). It is not compatible with the S210 (AWD/CVT) or WRX STI Sport ♯ (AWD/6MT) models in Applicable Model Symbol E. Please confirm your vehicle's "Applicable Model Symbol" and "Applied Model" designation to ensure proper fitment.