It was a marketing ploy. The small valve 750 head was fitted to the standard Monster for a while in order to make the 900 'S' version with the standard 900SS head more attractive (more powerful).
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Roast Beef Monster!
Termignoni and Bucci - Italian for pipe and slippers!
S4 Fogarty, S4R 07T, 748, Series 1 Mirage
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