I HAVE MY BIKE IN FOR SERVICE, REMOVED EXAUST SYSTEM, PURCHASTED A NEW DIGITAL HEALTHMETER SCALE FROM WALMART, AND DID SOME WEIGHING, THE C-10 STOCK EXAUST SYSTEM INCLUDING BOTH MUFFLERS, HEADER PIPES, HEATSHEILDS, CLAMPS, AND 4-HANGING BOLTS, TOTAL WEIGHT IS 33 LBS. JIMS EXAUST THE 3-PIPES 10 LBS. AND THE MUZZY MUFFLER 5 1/2 LBS. FOR A TOTAL OF 15 1/2 LBS.