| Pretty much any HD slip on will work, however don't change the filter with it or you will need to remap
Remember that the bikes are lean lean lean from the factory, you have a lot more power and cooler running motor if you'll pop on pipes, filter and a SERT or PCIII and have it tuned.
If you run HD filter and SE slip ons the SERT will have a canned map that will work, however everyone of the canned maps I've looked at had a lot of lean areas still, with afr in the 14.7 range.
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00 Heritage S&S 124 | 
