Price pressures and tighter emissions standards in the U.S. resulted in a much less powerful carburetted version, the TR250, being sold on the North American market.

Triumph claimed in their sales brochure that it was the "First British production sports car with petrol injection".

Standard equipment included front disc brakes, independent rear suspension, rack and pinion steering and a four speed gearbox.

Of these, 1,161 were destined for the UK market,[6] the remainder were left hand drive and were exported to France, Belgium and Germany amongst other countries.

Price pressures and tighter emission regulations resulted in twin Zenith-Stromberg carburettors being fitted instead of the TR5's Lucas fuel injection system.