1968 How Yamaha 5-Port Power helped Yvon Duhamel win at Daytona

By Yvon Duhamel, winner of the 1968 Daytona 250cc Event and Number 2 in the "big bike" 200 Mile Classic. "...After riding Yamahas and looking at their Daytona wins for the past four years I felt that this was the one bike that had the guts to do it. The reason of course was the fact that Yamaha is the first and only bike manufacturer who makes a 5-port engine..."

1968 How Yamaha 5-Port Power helped Yvon Duhamel win at Daytona Ad available at www.DadsVintageAds.com