this aluminum tach drive plug features an O-ring seal

• Accepts 3/8" NPT or 1/4" NPT petcock (Left side 1/4"

powdercoat or chrome however you want it

Does not fit 1/2 inch lock nuts found on late 1978 and later Triumph TR7 and T140 Bonneville models

you may need to use different jets based on your specific bike:

Tapered Kick Start Cotter Pin for Triumph Motorcycles - Oversized Subcategory_Neck Cups this aluminum tach drive plugThis is a brand new, replacement kicker cotter pin that holds your kicker arm to the kicker shaft on your Triumph or BSA engine. This is an oversize cotter pin and includes the nut. You drive out your old one with a soft drift and if it is no good, you can use one of these replacements. If your cotter pin has been beat in and out of your motor a million times your hole may be enlarged, no longer giving a secure fit with the tapered pin. That, my