Mate we are trying to help you and then you say we are wrong??? WTF, like me and blackstars_10 have said you dont get a 2007 NSR but keep thinking that if you like and like weve both said you cant use a CBR250 exhaust because its a four stroke exhaust and your bike is a two stroke(if it is even a nsr250).
And if you changing it for the sound coz you want it to sound like a CBR it wont work it never sound like that its a 2 sttoke not a 4stroke IL4.
I rekon just stick with your exhaust or if youve got the money get the tyga exhaust like blackstars_10 said they really good exhausts.
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