Our sporty and lightweight SLIP-ON system offers a great balance between price and performance and represents the first step in the exhaust system tuning process. The change will be also visual as our titanium muffler perfectly fit the exterior line of the legendary BMW tourer. The muffler outer sleeve is made of our exclusive high temperature and stress resistant titanium, which gives a special hi-tech touch to our SLIP-ON street legal system.       Performance   Measurements of the Akrapovic SLIP-ON STREET LEGAL system on the BMW R1200RT (without muffler insert):  Power & Torque: the exhaust system modification with the SLIP-ON street legal system results in a major boost in performance, delivering a massive 108.5 HP at 7520 rpm on back wheel. But the increased power isn?t available just at the top of the range; the system shows its quality already from 2000 rpm up through entire rpm range. Max. increased power between the Akrapovic and the stock system is 3.2 HP at 7500 rpm. Besides this, the torque is substantially higher in a lower rpm area at 2000 rpm and from middle to high rpm area.