Oh, you can also try Yuki from Southern Cross Sports (http://www.southerncrosssports.com/hondansr250.htm). He has lots of new & used parts for the NSR250, some are reasonabley priced some aren't. I got my JT fr & rr sprockets from him when every other local bike shop was quoting me almost double.
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Jerry Lai
NSR250 [MC21SP]