The Sleeper Pro Exhaust pipes are fabricated using 100% 304 Stainless Steel and are styled after the classic Triumph Exhaust of the 1960's. The high-performance mufflers feature our maintenance free Louvered Baffle system and are mounted with rubber bushings to isolate engine vibration and significantly reduces bracket fatigue, extending the longevity of your investment. Each system is handcrafted and TIG welded for the specific application. Installation is quick and easy for a bolt-on factory fit and finish. To match the factory headers on the Bonneville Bobber, we offer the Sleeper Pro in Brushed or Black (for Bonneville Bobber Black Models). Each Exhaust is individually inspected prior to packaging.