The frame number, engine number, and subframe sticker all indicate a 1993 NSR250R SE. There will be another sticker on the subframe indicating the original base colour. NH-196 will be white, or NH-1 black.

KW6 is the model designation of the NSR150SP. The 300 kit is based on modified NSR150 barrels. If you contact Matt@TYGA he should be able to tell you what generation the barrels are, as they should have an engraved serial number on them somewhere.
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Andy.
NSR-WORLD.COM

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