Second in popularity among specials builders only to the Triton, the TriBSA combined the fine handling qualities of BSA's proven duplex frame with the robustness and tuneability of the Triumph twin-cylinder engine. This example combines the frame of (probably) a BSA A7/A10 twin-cylinder model with a 650cc 'pre-unit' Triumph Bonneville engine dating from circa 1961. Other noteworthy features include twin Amal Concentric carburettors, a BSA/Triumph twin-leading shoe front brake, swept-back exhaust pipes, megaphone silencers, rear-set footrests and glassfibre tank and seat. There are no documents with this Lot, which is sold strictly as viewed.
Second in popularity among specials builders only to the Triton, the TriBSA combined the fine handling qualities of BSA's proven duplex frame with the robustness and tuneability of the Triumph twin-cylinder engine. This example combines the frame of (probably) a BSA A7/A10 twin-cylinder model with a 650cc 'pre-unit' Triumph Bonneville engine dating from circa 1961. Other noteworthy features include twin Amal Concentric carburettors, a BSA/Triumph twin-leading shoe front brake, swept-back exhaust pipes, megaphone silencers, rear-set footrests and glassfibre tank and seat. There are no documents with this Lot, which is sold strictly as viewed.
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
