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I took mine off, set the rear end on a block wood, then found a piece of pipe that fit into the center, and smashed them out with a hammer. They resemble 1 3/4 freeze plugs. they are welded in really tight, so dont afraid to whack them. I ended up cutting down the back end, and removing the inner baffletubes,capping them with a freeze plug, drilling about 100 more holes in the sides, then welding them back in backwards, sounded pretty good, and cost next to nothing. I still have these home made slip ons if anyone wants them U pay the shipping.
Sorry, TEK679 but I'm still waiting for warm weather to get here to test it out. It was below zero today with the windchill so I think it's still gonna be awhile. Why does winter seem to last so long if you own a bike? (last ride was beginning of december).
My bike was already on the rich side, not sure what size jet I got in there but this thing always has just been start, idle 20 seconds and take off no problem without using the enricher. Note that I don't find riding below 40 degrees much funbut right now it's sounding pretty damn good!!!
No drilling was needed to remove the baffles. They are held in place by two bolts and nuts on each muffler. You will see the bolt head on the outside of the muffler.
I used a wooden stake to break the baffles loose. I tapped it into the muffler inlet using the garage floor, while I held the muffler. It only took a little bit of effort. I've had the stock baffles out three times. I've gradually been drilling the holes in the stock baffles larger. They started as 1/4" holes. I then went to 3/8", and finally ended up with 7/16" inch holes.. When I was done, it was definitely sounding better, with a bit more torque.
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