H1 had wild power and frightening handling. KH dubious but a little slower and safer. Clutch, main bearings, seals, CDI and spark plugs all wear out rapidly. Engine rattles even after rebore (every 15k). H1B has points, carbs that need 300 mile servicing; KH has poor airfilter. Use Nippon Denso plugs, Denco or Allspeed pipes, Ferodo lining in the H1’s drum or Z900 caliper and master cylinder in KH’s disc – or fit GPz750 front end. Fun in a crazy kind of way!
1969-76, 498cc t/s triple, 60/55hp, 120/115mph, 25/35mpg