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

and air/fuel mixture screw

Replacement for Triumph OEM # OEM # 83-3875

No more trying to fit a wrench into your rocker box while turning the square adjuster with a crescent wrench

650cc Models: T120R (Bonneville)

Exhaust Spigot Adapters for 1972-up OIF Triumph Motorcycles Makes_BSA Key Dimensions: The threaded portionThese 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