This steel exhaust pipe spigot is used on various Triumph 350 and 500 twin cylinder models, as well as the BSA A75 and Triumph T150 triples. Can also be fitted to the outer exhaust ports on the Triumph T160 models.
The exhaust pipe spigot measures 1-1/2″ OD and is threaded 16 TPI. Made in the UK to original standard specifications.
The spigot threads into the cylinder head exhaust port to provide a mounting stub for each exhaust pipe. A complete seal at the exhaust ports between the stubs and the exhaust pipes is critical in maintaining a properly tuned engine. Finned exhaust pipe clamps are fitted to secure the exhaust pipes to the spigot.
The threads must be in good condition and cleaned of any carbon to install and maintain a tight junction between the exhaust spigot and the cylinder head. Two holes opposite from each other on the spigot allows a through-rod to be used as a lever to lock the spigot in place in the threaded exhaust port.