Launched in 1979 and designed by Triumph's Tom Higham, the Triumph T140D Bonneville Special was a styling exercise inspired by the Yamaha XS 650 Special.
 Several T140D features such as the top-mounted rear disc caliper and revised grabrail became standard on the T140E. The Bonneville Specials were finished in gold-pinstriped black with a stepped seat and seven-spoke US-made Lester mag-alloy wheels and a tuned two-into-one exhaust for the US market.
The T140D had polished fork sliders and a shortened chrome mudguard fixed in place by its central bracing strip.
Launched in 1979 and designed by Triumph's Tom Higham, the Triumph T140D Bonneville Special was a styling exercise inspired by the Yamaha XS 650 Special.  Several T140D features such as the top-mounted rear disc caliper and revised grabrail became standard on the T140E. The Bonneville Specials were finished in gold-pinstriped black with a stepped seat and seven-spoke US-made Lester mag-alloy wheels and a tuned two-into-one exhaust for the US market. The T140D had polished fork sliders and a shortened chrome mudguard fixed in place by its central bracing strip.
Triumph Bonneville T140