The Lucas SS5-type “normally open” cutout switch was originally specified for the Triumph and BSA twin-cylinder competition models with AC Magneto ignition through 1967. Housed in the prominent “mammoth” chrome cup, the 31071 cutout button is supplied as an assembly with the (2) wire leads and mounting clips for fitment to a 7/8″ handlebar.
Featuring a hard plastic black cutout button, this SS5-type kill switch assembly is a faithful reproduction of the original switch, intended for use only with the “Energy Transfer” models with battery-less ignitions. Not recommended for use with models that have been converted to battery/points or modern electronic ignition.
The cutout switch has (2) wiring terminals designed to connect the ET ignition coil primaries together when the kill button is pressed, resulting in the loss of function to the ignition.
The cutout switch is captured in a large handlebar-mounted housing, which must be removed from the handlebar to access the switch for replacement. Two clips joined with a screw retain the housing to the handlebar. The wire leads can be accessed once the switch is removed from the housing.Â
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Please note: Due the nature of the product, we unfortunately do not accept returns on bearings, service tools or electrical components. Please be confident about your purchase before ordering. If you have questions, please contact us.
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