I am in the middle of a build on an '18 RGS with stage 4, 2:1 headers with D&D pipe and ghost pipe along with a slew of other mods. All mods are being done at the HD dealer to my bike before delivery. A friend of mine said that his HD dealership wont install the header and pipes because the moco will void the warranty. Now my dealership hasn't said a word about voiding the moco warranty and in fact, I bought a 5-year extended warranty. I think if the dealership delivers me the bike and later I get a letter stating my warranty is void, the dealership and moco are going to have one hell of a legal battle? Does anyone have any insight to this?

I spoke to my service guy several times on this. The only way the moco is voiding warranties is for aftermarket, non compliant tuners. However he said, that is only if they know about it. Now, how they find out, he wasn't sure. His guess was this all started when some customer was an asshole to a dealer who ratted him out. However, the dealers get paid to do the work, as well as building a relationship with customers which builds loyalty. No faster way to lose that than to rat someone out.

He recommended to me that if I go in for warranty work, flash my ECM back to stock then bring it in. In his eyes, the only pipes he saw on my bike are the stock ones.

They also can't just void your warranty. If your radio goes out, it's covered. Unless they can prove your mod's broke your bike you're covered.

your ex warrenty is only as good as the dealer.it used to be if a hd dealer did the work and you took it back to them ,no problem.if on the road and need u need the warrenty,probably screwed.had a friend built 96 to 103,all hd parts.a part broke that was not part of upgrade-ex warrenty people refused to honor due to hd racing parts-all hd 103 upgrade.if your worried with warrenty and relevant cost the warrenty may not be there for you.as we all know they are a separate co--good luck

I initially installed my on my 2018 power duals and high output with an fp3 and had issues. Took it to the dealership and they reinstalled everything and didn?t say anything about warranty concerns. Turns out I need new gaskets. Took it back for my 1000 mile service and still now word. I have a great relationship with the service guys and figured if there was an issue they would tell me. But that?s just me.

Here is a link to another forum where they discuss the warranty issue. https://www.hdforums.com/forum/milwa...e-is-real.html

I think the bottom line is that you are on your own if you modify the bike so it is not EPA compliant. There are many opinions.

I bought a set of Rinehart slip-ons and am in the process of searching for deals on some Power Duals and FP3 (I have until spring when they'll be installed).

How do you like the sound of your bikr with the Duals and FP3 tuner? Is it worth the money or will the Rineharts suffice?

In my opinion it’s not worth it. Thought I was going to get a loud deep growl and it just doesn’t do it for me. My dresser duals, and twin slashes on my 16 SGS sound better.


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This warrant issues with Tuners came about due to an EPA lawsuit against Harley Davidson and their Screamin Eagle Race tuner. Harley was selling a product that can make the bike non-EPA complaint. Harley dealers were tuning the bikes with these tuners and Head Pipes with out Cats. Even more Non-Complaint. Harley paid a huge fine, in the millions. Harley also agreed they would no longer sell tuners that can make the bike non-EPA compliant. Per the lawsuit they also can not warranty non complain bikes.

That said many dealers will still turn a blind eye. Many dealers will do the modifications, and you will be covered at that dealer, but another dealer my turn you in for an after market tune and head pipe.

Tuners like the TTS Master Tune will store the factory map. You can then tune the bike for the aftermarket catless head pipe. If you have issues, ride the bike to the dealer, then with the TTS tuner put the stock back back in the bike. The factory check the ECM for warranty work.

Or find a good dealer that will work with you. I'm doing both

There are a couple of dealers in the state that will not do the work - my dealer did the install - been back for a clutch spring and oil pump, both under warranty - no questions / no issues at all, they did the work - obviously it's the dealer and the relationship you have with them - I'm sure it has a lot to do with the region / area as well - compliance with local / state enforcement - the stricter the enforcement the stronger the dealer compliance will be.......... I know one of of the dealers on the coast, heavy tourist / beach area will not install modifications, local law-enforcement enforcement stepping up sound regulation / checking exhaust EPA - they do not want to install and face fines or customers coming back looking for reimbursement for the parts / work. (and yes there are some that would do it)....

yes. they can. it is mentioned in your owner's manual no less than 5 or 6 times that if you install non-epa compliant parts (tuner, exhaust, cams, etc) in your bike that the 'powertrain' warranty is null and void. sure, you can still get your radio fixed, but nothing to do with the powertrain.

so, in a sense, you are correct. your entire warranty is not void. but, they do not have to prove anything. you modified your bike outside of epa guidelines, against federal law. all they have to do is point to your unapproved modifications, and then type up 'powertrain warranty void' in the computer so you're screwed no matter what dealer you go to.