Smiths Trip Reset Knob SHORT STD Triumph BSA Ducati 500 650 750 Norton Electrical including plastic base used for

including plastic base used for the left handlebar (7/8") switch used on later Ducati singles and early twins

This cap is for an opening with od of about 45mm

much more original looking than the plastic caps Brembo is supplying now

Guzzi part number would be 1775-1652

Smiths Trip Reset Knob SHORT STD Triumph BSA Ducati 500 650 750 Norton Electrical including plastic base used forA beautiful new part, stainless steel. Last Triumph part number is 99 0176. This is the shorter of the two styles made, to suit the 3" magnetic Smiths gauges installed on just about every British motorcycle after 1964. Overall length of the knob is about 1 1 2", meant for gauges with adjustment from the side of the instrument body, as with most everything but Norton Commando and very late Triumph. I will answer questions promptly, good luck and thanks