Thinking about de-catting my 2011 Ultra

Question

Thinking about de-catting my 2011 Ultra. Anyone else removed the cat converter from the head pipes? Let me know how easy/difficult it was. What method did you use? Any tips/tricks to share?

Ken 6 years 14 Answers 1328 views 0

Answers ( 14 )

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    I have a head pipe with cat removed already for sale of a 2010 ultra

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    I bought a stock pipe already gutted. The bike runs much cooler with it. Highly recommended!

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    It’s not a hard job to do it’s getting it welded back together that’s the difficult part do not go the drilling out route doesn’t get it all out

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    Did mine 2010 and 2013 ultra classic limited. First one I removed headpipe and clamped it in a vise to secure then drilled out the cat starting with a half inch drill then up to a one inch drill bit. Just punching holes in it at first then hammer and chisel to remove. Chisel/Work the edges all around and it comes out pretty easy in big chunks. Second one I did I just removed mufflers and did it right on the bike. Took about an hour total. Easy peasy.

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    Did it on my 2011. Removed the head pipe and used a drill and chisel. Got it all out. About 1 hr.

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    Thanks for the recommendations! Sounds like my winter project list just got a little bigger!

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    There is a guy who removed the cat on a M8 2017 then put it on a dynamometer Did’t get a significant HP jump but it did run cooler. As soon as the warranty is up I’m going to remove the cat. Only cause the new 2017 bike runs very hot

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    Just take all the bolts out move everything out the way and pull them off

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    After doing some more research, I plan on pulling everything off and working it on a bench.

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    If its the same as a 13 ultra like mine it was easy enough to cut a rectangle out of the side and dig it all out then get the plate tigged back in. Much much cooler

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    That’s the first thing I did with 12 and 15 it makes such a massive difference.

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    Remover head pipe, sawzall thru weld on both ends of cat. Make a cut on top, pry open and peel cat out. Clamp together and reweld. Very easy. Did 12 switchback 2 15 ultra limited, much cooler

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