Composit Competitor The 1986 Suzuki Heron TSR

Something of an evolution of the official Suzuki square four it might have been, but the TSR did at least look to new avenues of frame design to keep competitive.

The name was bond… Ciba-Geigy bond (a bonding material invented for aircraft construction – Ed) if we’re being precise about what held this race bike together.

The final version of the square-four motor was the XR70RV, as fitted to TSR08, which produced 138hp at 12,500rpm (rear wheel).
The Heron TSR came about as the result of Suzuki officially withdrawing from GP racing at the end of the 1983 season.
The business end.

Words and photos: Phil Aynsley

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