*** IN STOCK SHIPS TODAY *** Billet alum. injector linkage arm is profile machined to offer the racer lightweight with great looks and fits Bird, Buzzard and Big Ugly with a 7/16" serrated shaft as well as all carbon fiber injectors that use the 5/16" or 7/16" butterfly shaft.
With these linkage arms it makes it easy to hook up a throttle cable as well as a return spring.
Billet arm has 10/24" threads on both ends. Most Bug and early Bird Catchers are 5/16" shaft size, Buzzard, Big Ugly, carbon fiber are typically 7/16" shaft size.
Racer can pick shaft size from drop down menu.