Yamaha Motor USA - Yamaha of Yesterday 1981 XJ550H Maxim. The XJ650G Maxim was launched in 1980, and the bike was an immediate sales success. As a result, in 1981, Yamaha expanded
4 Sale / 1981 Yamaha XS1100: Japan gets serious about cruisers - Adventure Rider
1981 Yamaha Maxim 550 Motorcycle Ad - Son-of-a-Maxim | eBay
1981 Yamaha Seca XJ750RH: Even After 40 Years It Hasn't Mellowed