Hello everybody out there,

Sorry for my english, I write from Spain, I’m not a native english speaker….

I hope you can help me with my problem, because I’m about to go crazy…..

I own a ’04 883 Custom. It’s all stock but the SE Slip on Mufflers. I changed pipes just to make the bike louder. It’s my first bike and it’s powerful enough, I needed no performance gain. My question is this: When changing from stock to SE, do I have to do anything else? I mean, do I need to change de air filter and the jets of the CV? In case I don’t, will I have any problem?

I’ve asked this before, so I think I can answer myself: I won’t have any problem but neither any performance gain. Am I right?

Second question: what’s ‘ Stage I ‘. Is it changing pipes, air filter and jets? Can I do that with these elements?

- SE slip on mufflers #80423-04
- SE pro high-flow air cleaner kit #29042-04A
- Dynojet kit #29045-97B

Please be advised that here in Spain the “density of dealers” is much smaller than in the USA and, in my opinion, their technical knowledge is also much smaller, so I should do it easy for them. Installing ‘ Stage I ‘ is easy ?

Thanks in advance for your help.

Happy rides,
efren.rodriguez@solvay.com

It's really not all that uncommon for people to be satisfied with a a stock Sportster. Depending on how you ride and who you ride with you may or may not even need or appreciate the power gain. Stage one will increase your power and it's easy to do. We here in the forum will help you all the way. I strongly suggest investing in a service manual before you do anything. Putting the SE11s on alone won't hurt anything. Your plugs will always tell the story.

Yes those items are what is reffered to as a Stage 1.

You won't get a large performance gain but there will be some because the standard mufflers are very restrictive for noise/emissions etc. Above all you will get that classic Harley sound! It is also know as "paying the Harley tax".

If this is your first bike I would suggest you get a bike shop(not necessarily a Harley dealer) to re-jet the carb for you as it can be a bit tricky for a beginner. The mufflers and airbox kit are easy for anyone with a toolkit. Be warned though the nuts and bolts are not metric and it can be a pain sourcing tools.

Hope this answers your questions.

Your English is very good by the way...and I apologize for the seemingly arbitrary American system of measurement.

BTW Americans, I used to only use the American standard system of measurement until I started doing some Archaelogy work where I had to use metric. And once you go metric....there is no going back.