Our sporty and lightweight SLIP-ON system offer a great balance between price and performance and represent the first step in the exhaust system tuning process. The change will also be visual as our HEXAGONAL muffler perfectly fit the exterior line of the Gladius and add a clean racing image. The muffler outer sleeve is made of titanium or carbon-fiber, which gives a special hi-tech touch to our SLIP-ON system. We offer the street legal version with removable noise damper.  Measurements of the Akrapovic SLIP-ON system on the SUZUKI SFV 650 GLADIUS (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 71.4 HP at 8630 rpm on the back wheel. But the increased power isn?t available just at the top of the range; the system shows its quality from 3000 rpm already up through the entire rpm range. Max. increased power between the Akrapovic and the stock system is 1.37 HP at 8500 rpm. Besides this, the torque is substantially higher in a lower rpm area at 3000 rpm and from middle to high rpm area.