The Akrapovic Slip-On system looks great on the BMW, and improves the performance of the engine. The system is designed as a base-level exhaust system modification. The Street Legal version includes an approved noise damper.

Measurements of the Akrapovic SLIP-ON street legal system on the BMW F 800 GS (with noise damper):

Power & Torque: even as a base-level component, the Akrapovic Slip-On SP series system delivers a performance increase. The largest effect is shown on the torque curve, while the power curve is also increased, especially in the middle and at the top of the rpm range. Max. power was 85.3 HP at 8400 rpm, and max. increased power was 0.7 HP at 6600 rpm.