Exhaust Akrapovic Slip-On BMW 4 CONVERTIBLE M 440 I XDRIVE MILD-HYBRID 01-21

These are a high quality lightweight titanium implant finished with hand crafted carbon fiber end caps and a set of high quality austenitic stainless steel connecting tubes. Valves on each side are designed to tailor the sound, and two acoustic reflectors are mounted on the terminals to guide the sound into the car's cabin. Since the Akrapovic Evolution (Titanium) system has two valves, one more than the stock configuration, a TNG controller is included in the product to activate the additional exhaust valve. To make the sound experience even more unique, there are two tuned resonators - specially developed for this new engine - which produce a deep, rich and sporty sound without unwanted hum or hiss, perfectly aligned with the six-cylinder engine. It weighs 21.7kg, which is 23% lighter than the stock exhaust. During the Akrapovic dyno test with a BMW M440i with stock exhaust power gains of 8.7 kW (11.8 PS) at 5,600 rpm and torque increases of 17.1 Nm at 4,100 were recorded. rpm Several special parts are cast in Akrapovic's in-house foundry to create the intricate and complex elements needed for this exhaust. Intended for track use only and for non OPF/GPF vehicles, ECU remapping is recommended. Please note that both product numbers, S-BM/T/31H and E-BM/SS/8 have been split for packaging reasons. Both codes must be ordered. Fitment Notice: Evolution Line (Titanium) only fits non OPF/GPF vehicles. For non OPF/GPF vehicles, the ECE type approval certificate is not valid. This product also fits the BMW M440i xDrive Cabriolet (G23) model. THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR ROAD OR HIGHWAY USE.