Slip ons won't slip on
 

So if you've been following my never ending quest for the perfect sounding HD you will notice I have spent a lot of time trying different mufflers. I got to my present switch this afternoon and the used V&H Monster Rounds just won't go over the head pipes. Just had the last set of mufflers on there for about 2 horrifying weeks and they slipped off. Tried to slip the used set of monsters on there on and they go on about 1/4" and aside from a sledge how am I to get them on? Lots of Movit and anti seize were used I'd like to add. Do I have to take it to a muffler shop?
Thanks

Hmmmmm, maybe call Vance and Hines see what they say? I would think most head pipes are the same diameter so one would think that slip ons will be a universal fit.....?
Just my .02

Since they're used, its possible that the previous person clamped down on the exhaust clamp & dimpled the muffler extension. Some auto parts places will rent you a pipe expander for a few bucks. Go slow with the expansion tool.

I just had this problem yesterday with cfr kos slip ons ... got aggravated ... ended up having wife hold the slip on in place and used a block of wood on end cap and did a couple of whaps with a sledge .... they are on and didn't seem to do any damage .... : )

Couple of bucks at Harbor Freight for the medium size pipe expander. You will probably need it also if you ever have to remove and re-install the crossover piece that goes under the bike.

Good help, thanks everybody. I'll buy an expander then and take it slow.

Just think if you put them on using a hammer, just how hard they will be to get off.

And don't forget; what is holding the header pipe on, and your going to "Hammer" on it.

Well they are going to be tight to get on but at least they won't fall off - amiright?

A little emery cloth
 

Possibly try some emery cloth on the headpipes to take off any burring or corrosion. Also, try to smooth out the muffler inlets too.

JM2C