You won't know if you tore your seal until after you have reinstalled your points plate and timed the engine

Key Dimensions: The threaded portion of the switch is 3/4" long

5TA (Speed Twin)

Note: It is advisable to check the inside diameter of the pipes you want to use these tips on to be sure they are going to fit

Replacement for Triumph OEM # OEM # 83-3875

Exhaust Spigot Adapters for 1972-up OIF Triumph Motorcycles Makes_BSA You won't know if youThese steel exhaust spigots fit into your 1972 and up 750 c. c. OIF (oil in frame) Triumph motorcycle head and allow you to run earlier 650 c. c. exhaust pipes. The spigot end that fits into your head is 1. 39" and is a tap in fit. Chill these adapters in the freezer, heat up the head lightly with a propane torch and tap these in place. The heat expands the aluminum, the cold contracts the steel adapters, and this allows easy assembly that tightens up