I have tru dual Rinehart on my 07 flhtc, and want to go to monster ovals. I would like to keep the tru duals and just replace the mufflers. Is there any thing or any suggestions to do this. The reason for want to do this the Rinehart are just getting to loud after being on the road on long trip and I see my wife winching in the mirriors from the sound also. Any help would appriciated

 

There is no easy way to do this. I went through the same thing myself. I just sold mine and bought a new set up...

 

I don't see any reason why you couldn't run a 2" to 1 3/4" reducer. You can find muffler adapters at autozone in a dozen different configurations. You'd want a 2" i.d. to 1-3/4" o.d. You'd probably want to take your headers into a muffler shop and have a reducer welded onto the head pipes, but you could probably cut slits in the reducers and clamp them on to try and see if you get the sound you want. You might also need to trim a little length off the headers in order for the muffler clamps to line up properly.

You'll take a little performance hit. The Rinehart td's are stepped design, and you're putting a bottleneck right at the end. On the other hand, we do the same thing with torque cones, it's not a whole lot different.

 

It would look like crap unless you cut some length off the header pipe. If not, the heat shields won't cover the reducer. I still think the best option is to sell them. Once you cut them, they are probably yours for life...

 

Look at some of the Bub quiet mufflers that come with 2" inlets.

 

Thanks guys for the help.

 

Here you go, look at the column labeled I.D - O.D reducer. You'll need a 2" I.D. to 1 3/4 O.D. You shouldn't add more than about a quarter inch in length, and that's just for the step-down part of the reducer. The rest of the adapter will be over the head pipe or inside the muffler.



The end that goes on the head pipe will need a couple of z-cuts, or some staggered slits, so it can be clamped down. Otherwise, you could (like I mentioned earlier), just take the headers to a muffler shop and have them weld up the adapters. It's pretty basic work, any shop that does custom exhausts can easily do it for you, for next to nothing.

(If you were going the other direction, (a 2" muffler inlet to a 1 3/4" header pipe), you could use a reducer bushing that would fit inside the inlet end of the muffler body, but that wouldn't work in your application, because the muffler end goes over the head pipe.)

 

More to it than the diameter. You need to compare the length between the two brands of mufflers. Do the Rinehart head pipes terminate at the same place as the stock head pipes that the monster ovals are designed to fit? This will affect where the mounting bracket on the muffler ends up in relation to what it attaches to. Adding a reducer adapter is going to add to the length of the exhaust system.