I should have taken pictures of what came with mine (I've since thrown them away), possibly the company I bought them from added a set of clamps, not sure but the ones I got were so skinny they would work great on a small muffler with this metal tubes, but they snapped easy while tightening them.

 

I apologize. I was adjusting mine last night, and snapped one too. O'reilly's had the u-bolt type like pictured above. I bought two for just under $3.

 

Well Mac sent me my new clamps and they broke like little twigs. Im really thinking about rolling stock exhaust again, I just have no luck[:@]

 

Just go to napa and buy two HD stainless U-bolt clamps for 2.5" pipe. That should work fine for ya.

Just dont expect to be able to remove the mufflers again without grief as the U bolt clamps crimp the pipes together and make it a pita to remove without damage.

Band clamps are easier to deal with but dont work as well unless the pipe is slit.

 

Don't give up on your MAC's yet. These are awesome sounding mufflers. Once they are on you'll never go back to stock guaranteed......

 

Call me a goober but I had a muffler shop install mine and they did weld them on. At least I know they are on there for good and they do rock big time.