Milwaukee Eight (M8) 2017 and up M8 Air and Liquid Cooled discussion
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Old Aug 8, 2021 | 12:19 PM
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will slipons only change the performance of a 2019 all stock ultra classic.
thanks for any help
looking at cobra n h slipons
 
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Old Aug 8, 2021 | 01:45 PM
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Originally Posted by hoggy05
will slipons only change the performance of a 2019 all stock ultra classic.
thanks for any help
looking at cobra n h slipons
Not materially, no. Some slip ons will reduce your low end torque by a small amount.
 
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Old Aug 8, 2021 | 03:36 PM
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Nope.
usually mufflers are changed to change the sound, nothing else.
 
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Old Aug 8, 2021 | 04:06 PM
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keep in mind that some slip-ons may produce undesirable effects such as snap, crackle or pop..may be fine, may be slight and may suck so you have to tune to get rid of it...trial and error can be expensive so do some real due diligence in researching before buying
 
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Old Aug 8, 2021 | 05:57 PM
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slip-on mufflers general just give a little better sound, while your in there might as well do a air cleaner and upgrade to the ECU, aka stage 1.
 
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Old Aug 8, 2021 | 06:41 PM
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Nothing sounds like Thunderheader check out my video right after I put them on. They sound even meaner as I got some miles on them.
I kept the cat and stock headpipe with an FP3 tuner that I made 3 auto tune sessions with the map I'm using. Bike sounds and runs awesome with over 50k miles so far. I've only done oil changes nothing is broke or needs fixing. Most reliable Harley I've owned. When the top end needs a refresh (100k or more) I'll do the cam. My bike will keep up so I don't feel like I'm missing anything.
 
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Old Aug 9, 2021 | 09:16 AM
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I took off my stock 21 Ultra Ltd slip-ons put the 2018 CVO Ultra Ltd slip-ons last week....

stock pipes had an obstructed flow, the CVO has a clear through hole from end to end,

Cant tell much diff ... except maybe the is a little louder, but my wife didn't notice :- )
 
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Old Aug 9, 2021 | 09:20 AM
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I put a cheap version Mutazu slip on's on my 2021 Road Glide and lost lower RPM torque. I bought the Big City Thunder 3000 Series 2 into 1 baffle and it really woke up the bike. I got my low end power back and the bike sounds awesome now. Not bad for a $90 investment




 
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