Downpipe Decat Black Mamba for BMW X3M / X4M F9x

Description

Black Mamba Decat Downpipes, made from high quality T304 stainless steel, are designed for the BMW X3M and X4M F9x with S58 engines. These 3,15″ (80mm) diameter downpipes delete the main catalysts and offer an impressive 35hp gain on a Tier 1 engine, while delivering a powerful and aggressive exhaust sound. Featuring a high-flow structure and thermal insulation that reduces heat radiation by 50%, these downpipes offer the best performance and value for money. Direct Bolt-On Installation 2-Piece Kit 100% T304 Stainless Steel Construction 3,15″ (80mm) Diameter Piping Thermally Insulated to Reduce Heat Radiation by 50% Measured 35hp Gain on a Tier 1 Engine Aggressive Exhaust Sound Hand-TIG Welded for Maximum Durability Assembly Kit Included Lifetime Warranty ECU Calibration Required.