January 11, 20179 yr On 2015-12-19 at 8:12 PM, shercosteve said: Hello, Trying to learn about TY Yamaha's prepped by John Shirt in the mid 80's. I have one that I know has been in the US since 1985, I've noticed a few items that seem to be different than a stocker, Mine has John Shirt stamped in which appears to be a different style silencer than stock. Can any one tell me what John did to these bikes. Thanks, SB Did you know that the bike you have was built and ridden by Tony Scarlett in the World Rounds in Canada and the US?
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