Akrapovic BMW R 12 nineT / R 12 / R 12 G/S 24-26 Optional Header (Titanium) - E-B12E6Akrapovic Optional Header E B12E6 For BMW R12 Nine T Upgrade your bike with the optional Akrapovic titanium header. Designed for those looking to upgrade their Akrapovic Slip On exhaust system to a complete system, this part offers an incredible combination of performance, aesthetics, and the renowned Akrapovic sound. To get the most out of the E B12E6 manifolds, it is recommended to remap the engine control unit (ECU) to optimize throttle response