Honda TL250

Don Smith, Ride It! The complete book of Motorcycle Trials, Haynes 1975

Eight years after Sammy Miller and his Bultaco made big four stroke trials bikes obsolete, Honda hires him to develop a modern version. This larger bike followed the gentle TL125 "Bials"- basically just a playbike- introduced a few years earlier. 
Consensus was; too heavy, not enough power. Looks nice though.