SUZUKI have stepped into the big league with what must be the most complex super sporting roadster ever built. Powered by a 750 cc transverse in line three cylinder engine with pump assisted water cooling, the gleaming prototype is top two wheeled crowd puller at this year's Tokyo Show, which opened to the general public on Saturday.

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Performance and technical specification are being kept secret. However, while the figures may mean little, the machine's speedometer is calibrated to 150 mph and the rev meter's red zone starts at 7,000 rpm. With vertical front fining on its polished light-alloy water jacket the engine is equipped with four reverse cone exhausts , the pipe from the middle cylinder dividing into two. To ensure adequate cooling when at a standstill, it has an electric fan , operated by a handlebar switch, to draw air through the radiator mounted on the front down tubes.

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Suzuki personnel at the Tokyo Show refused to say whether the three was destined for production or what it might cost. (* see below) However, as American sales of their 500 cc twin are suffering from the popularity of the three-cylinder Kawasaki, it seems probable that the seven-fifty, or something very much like it , may be marketed in a determined bid to restore Suzuki fortunes in the USA.

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In the same issue this is an example of the competition from dealer ads.

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• BSA 650 Lightning - £409

• BSA 750 Rocket 3 - £614

• Honda CB750 -£700

• Norton 750 FB - £525

• Triumph 650 Bonnie T120 - £423

• Triumph Trident - £617