For the BMW R1100S 1998-2005 we have for example the GPR Slip On Exhausts Deep Tone ✅ in our product range. They are available in stainless steel silver or black. Due to their EC approval / test number, they are approved all across Europe (no entry in vehicle papers required). All parts needed for assembly are included in the delivery content and both exhausts are made of high-quality stainless steel. An authorised dB reduction device is included in the delivery content. It is attached in the end-cap of the Deeptone model by means of a retaining ring. Moreover, a funnel-shaped component in addition to the above dB absorber will also be included, depending on the model in question. This component is fixed in the silencer inlet, in order to reduce the exhaust noise to the level permitted. Warning: If the exhaust system is used when participating in public traffic without the dB reduction devices, the authorised approval is no longer valid!