- Comprehensive instructions

matching stock specs for multiple Harley models

and air/fuel mixture screw

Black natural rubber sandwiched between two threaded 5-16"-18 studs

650cc Models: T120R (Bonneville)

Exhaust Spigot Adapters for 1972-up OIF Triumph Motorcycles Makes_BSA - Comprehensive instructionsThese 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