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Its a 250... there's nothing aggressive about it. as for sound there are a few companies out there that make pipes for it. try looking at scorpion exhaust for starters. also, they do make complete systems for the bike.

Just remove a couple of baffles out of the mufflers at first. you`ll be surprised.

Gutting (removing baffles) doesn't sound good at all. It's louder but sounds rediculous and is usually obvious. It also has an adverse effect on hp.

I've said it before and I'll say it again, Muzzy has the best relationship with Kawasaki sport bikes. More so in their line of full exhaust systems.

Since slip ons don't really have an impact on performance any of the major brands will sound good. it would then be a matter of preference.

D&D, Yoshi, Brock, Vance & Hines, Akapovic, Two Bros, and Jardin all have quality sound in their products.

For sound... Just fit a race system exhaust (muffler) but they will just increase the noise and annoy your neighbours, on a 250 the power gain would not really be noticable.
Just a bit of advice, fit a free flowing air filter on your bike if you change the exhaust. K&N or something equivalent, that will give you much better sound out of the exhaust and noise from the air box as well.

I found this website after 250r and it has helped me a lot.

There's just about no way to get a DEEP rumble of large engine from small engine.

If you were to remove the baffles, you get a really noise, sharp, high pitch (annoying) engine sound.
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You can try other performance exhaust. But in my opinion, it is less aggressive to be loud and slow.



Good Luck...

get a full exhaust system...jardine, satos, yoshimura, akropovic, harris, muzzy ....look for those if they make it for your bike

How can I improve the sound of my 08' Kawasaki Ninja 250R? What brand exhuast...

...gives the most aggressive sound? I'm not looking to gain HP, or make it quicker. its a 250 lol, I would like to give it more of a sports bike sound.