Now you have the look of expensive "tuner designed" exhaust systems at a fraction of the price. These tips will give the styling features you want without replacing the rear muffler. Most applications are easy bolt-ons. The 140 chassis S Class and 129 chassis SL original exhaust tips require trimming of the original muffer's tips. 2003-2008 SL (R230 chassis) need the bumper trimed to fit the exhaust tips.