99 Wr400

Does anyone make a kit for the 99 WR400 to make an extra 50cc kit out of the engine? Or more than 50cc? I thought Two brother made one or something. I could be mistaken

Ty. for the post.

nimiz1 also gave me this link that i've been working from.

I'm going from 400 to 426 using all oem parts for safety.

good luck , keep us informed of your progress.

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