Cheap muffler upgrade? - KawiForums - Kawasaki Motorcycle Forums
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post #1 of 4 (permalink) Old 06-14-2016, 07:48 PM Thread Starter
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Cheap muffler upgrade?

I'm looking to replace the stock mufflers on my pre-gen Ninja 250 because, frankly, it sounds like a freakin' moped.

I only want to do this if the price is right, though, as I don't want to put a whole lot of money into this bike. I don't want to spend hundreds of dollars on new mufflers, so I noticed that Emgo Shorty mufflers are really cheap ($50 for a pair).

Would these work on my 2007 Ninja 250? I watched a few YouTube videos about the mufflers and I really like the sound of them.

Also, seeing how I would only be replacing the mufflers and not the entire exhaust system, would I still need to do a re-jet?
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post #2 of 4 (permalink) Old 06-14-2016, 09:05 PM
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Welcome here.

These Emgo aftermarket cans (mufflers) will probably work, but since they are generic, rather than dyno tested and test rode specifically for your year and model, no one knows for sure how well they will work (unless they tried this with the same year and model bike, but the jetting still might be different for yours).

My advice is to leave the airbox and air filter stock, then try these exhausts with the stock jetting. You might need to buy a jet kit and do some rejetting to be happy with the throttle response. You might get lucky and your engine runs fine with no rejetting. If you fuck with the stock airbox and stock air filter, you increase your chances of needing to rejet by maybe a thousand million times.

My advice- keep track of the gas mileage after the exhaust changes. Better (higher) gas mileage than stock is usually from running leaner and hotter than stock, possibly shortening the life of the engine, especially if you notice the engine is running hotter than normal.

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post #3 of 4 (permalink) Old 06-24-2016, 01:09 AM
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I have heard almost all the name brand slip-ons. Akrapovic by far sounded the best too me, had amazing tone, depth, and not overly loud, but they are also probably the most expensive. The thing had such a nice, jet like induction noise with a whistle, but still had a very deep growl, just beautiful to listen too. It really is in a class of its own (if you ask me). Next would be the Two-bros slip on. This guy was a little loud but had an awesome aggresive growl. After that I like the Yoshimura, it had a good mix of everything and wasn't too loud, but not very aggresive either and not too deep. I also had a Level One racing tube. This guy was definitely the cheapest, but it did produce a loud growl. It actually was probably the noisest of all the ones I had... Long rides could give me a headache at certain frequences if I didn't have my foam music ear plugs in. But it still had an ok tone, very growly, deep and loud. All of these should be able to be had for 75-200$ used on ebay (except the Akrapovic which would probably be 250-300$ used)

Last edited by stanson; 06-24-2016 at 01:59 AM.
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post #4 of 4 (permalink) Old 01-30-2017, 08:05 AM
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Like a moped?? Its a fairly high-revving bike.

Try a Harley exhaust?
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