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JAPANESE
MOTORCYCLE ARCHIVE
EN/JA

03 — 1970s

The MachineArrives

Large multi-cylinder machines and potent two-strokes established Japanese big bikes on the world's roads.

Machines placed by verified production start year

1970 Yamaha XS-1 on display at Yamaha Communication Plaza

YAMAHA

Yamaha XS-1

1970
Standard

Yamaha's first model with a four-stroke engine, after making only two-stroke machines since 1955. A slim 653 cm³ OHC vertical twin in an equally slim double-cradle frame answered the brief for a light, slim and compact large-displacement sports bike. Fans nicknamed it "Peke-S".

Front-left view of a 1971 Suzuki GT750 in Candy Bright Red at Suzuki Plaza

SUZUKI

Suzuki GT750

1971
Standard

Suzuki’s first 750, introduced in September 1971 as the flagship of the GT series. Its 738 cc liquid-cooled two-stroke inline triple used a pressurised system with an aluminium radiator and electric fan, and in the United States the model became known as the “Water Buffalo”.

1974 Yamaha YZ250 on display at Yamaha Communication Plaza

YAMAHA

Yamaha YZ250

1974
Motocross

A production replica of the YZM250 (0W12) works machine that won the 1973 Motocross World Championship and All Japan Motocross Championship titles. It was the first production model with Monocross suspension, hence the name YZ250M. A competition-only machine with an air-cooled 246 cm³ two-stroke single and a 5-speed gearbox.

Front-left view of a 1980 Suzuki RG500 (Mark V) at the 2023 Greenwich Concours d’Elegance

SUZUKI

Suzuki RG500 Grand Prix racer

1974
Race Machine

A road-racing machine developed by Suzuki for the 500 cc Grand Prix world championship. It used the square-four two-stroke layout proven in Suzuki’s 1960s Grand Prix programme and was designed by Makoto Hase. It finished second on its debut at the 1974 French Grand Prix and took its first win at the 1975 Dutch TT.

Yamaha SR400 at the 2009 Tokyo Motor Show

YAMAHA

Yamaha SR400

1978
Standard

Since its debut in March 1978, the SR400 held its following with a simple, largely unchanged style and the pulse of its kick-started, air-cooled single. For the Japanese market the line concluded with the Final Edition Limited of 2021. Specifications listed are those of the 2021 Final Edition Limited.