SLIP-ON STREET LEGAL EXHAUST SYSTEM for the BMW K 1300 S/R (2009 - 2010) The dynamic roadster offers a great tuning platform for motorcyclists who desire something special. 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 design will perfectly fit the exterior line of the BMW and add a clean racing image The muffler outer sleeve is made of our exclusive high temperature and stress resistant aluminium or Stainless or titanium or CarbonRI, which gives a special hi-tech touch to our SLIP-ON street legal system. Performance Measurements of the Predator SLIP-ON STREET LEGAL system on the BMW K1300R (without DB Killer insert): Power & Torque: the exhaust system modification with the SLIP-ON OPEN system results in a major boost in performance, delivering a massive 163.4 HP at 9750 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 4000 rpm up through entire rpm range. Max. increased power between the Predator and the stock system is 4.4 HP at 9750 rpm. Besides this, the torque is substantially higher in a lower rpm area at 3500 rpm and from middle to high rpm area. Performance measured on SuperFlow Cycle Dyn Stock vs Predator Max. increased power Max. rear wheel power (HP / rpm) 4,4 / 9750 Stock 159 / 9750 Predator 163,4 / 9750