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Honda RC 146 125 Four cylinder

Tom Phillis and Luigi Taveri took the 1961 and 1962 world championships with the two-cylinder Honda 125, but in 1963 the more powerful two-stroke, two-cylinder Suzuki that Hugh Anderson rode came in first.
Honda's defeat was due to a mistaken view of the Suzuki's capacities held by the Honda technicians. They already had at their disposal a more competitive motorcycle, but its tuning had been delayed.

The new Honda was a four-stroke, four-cylinder 125, and it had a two-shaft overhead geared distribution with four valves. The cylinders were arranged in an in-line transverse Position. In the first race of 1964, run in America at Daytona, Anderson won with his Suzuki. Then it was Taveri's turn, and he won three consecutive Grand Prix. His teammate Jim Redman won two more. Anderson came back to win the East German Grand Prix and the one at Ulster.

Then Taveri won at Imatra and Monza. The final race was in Japan, and Ernst Degner won with his Suzuki. But Honda had already clinched the championship.
One year later Anderson and Suzuki got their own back. The two-stroke Suzuki was improved to the point where it could beat the four-cylinder Honda.

Motorcycle: Honda 125 2 RC 146 Manufacturer: Honda Motor Co. Ltd.,
Tokyo Type: Racing Year: 1965
Engine: Honda four-cylinder, four-stroke, with two-shaft overhead geared distribution and four valves per cylinder. Displacement 123.1 cc. (35 mm. X 32 mm.)
Cooling: Air
Transmission: Eight-speed block Power: 25 h.p. at 16,000 r.p.m. Maximum speed: Over 125 m.p.h. Chassis: Double cradle above, tubular,
engine suspended. Front and rear,
telescopic suspension Brakes: Front, central drum, four-cam;
rear, central drum, double cam