The British Customs Straight Pipe Performance Tips replace the stock muffler with drag racing style tips that greatly improve the look and sound of your Triumph Bonneville Bobber These tips install quickly and easily behind the catalytic converter, which helps open up the deep, resonant note of the engine TheyÆre made from 304 stainless steel for durability, quality, and weather resistance, and will develop a rich patina that will complement the colors of the header Vintage drag racing looks 13 lbs lighter than stock mufflers Installs quickly and easily Made in USA. STRGHT PIPE PERFRM TIP BK