1974 Suzuki TM400 Motocrosser By 1974, Suzuki had already been through five production seasons of motocross bikes, had launched the TM400 Cyclone in 1971. Suzuki’s foray into production motocross machinery began with the rare blue and silver 1968 TM250, a twin port machine largely based on the CZ twin port design. Launching an open class machine really got the attention of American riders especially since Suzuki mounted Joel Robert and Roger DeCoster had just won the 1971 250 and 500cc World Cha