Triumph 350 / 500 Unit Twins Inlet / Exhaust Valves (1) - 1957-74 - Choose Valve Type

Rebuild your classic Triumph 350 / 500 unit twin by purchasing and installing our fine, English made valves. Each intake / exhaust vale is manufactured from stainless steel to bring you both quality and longevity. Each valve will replace Triumph part number 70-4640, E4640, 70-3738, E3738, 70-3739, E3739, 70-4012, E4012, 70-4013, and E4013.

Valves where fitted to a wide range of Triumph 350 and 500 models including the 3TA, T90, 5TA, T100, T100C, T100R, etc from 1957-1974. Please refer to your parts catalog to ensure the best fitment.

Valves are sold individually - use drop down menu to select which valve you desire based off your year and model