Exhaust
A Note On Exhaust
Muzzy is the only company currently making full exhaust systems for the Ninja 250.
Two Brothers Racing has recently started making slip-on cans for the Ninja 250. They can be found here. SuperTrapp/Kerker makes universal-fit cans, but you would have to figure out how to mount them, and they are priced about the same as a full Muzzy system. Your dealer may have a better idea of what's available than what you can find on the internet.
If you just need to replace your stock cans, you can usually find some decent used ones on eBay.