The S&S circuit breaker gears for generator big twin style engines are made to the same high quality standards as all other S&S gears. They are available for engines from 1936–'69 in two versions. The standard version turns the timer in the stock clockwise rotation and is meant as a direct replacement for stock gears to be used with stock style timers. Our counterclockwise or reverse rotation version changes rotation to the opposite direction, enabling the builder to use the S&S and other aftermarket timers with the S&S Super Stock® electronic ignition and some other aftermarket ignition systems. The circuit breaker drive gear is slightly narrower than stock, allowing the use of generator style cams with 1984–'99 style lobe design.
Includes circuit breaker drive gear and idler gear assemblies, circuit breaker gear, and two average size shims.
Fits 1936–'69 big twin engines and custom alternator/generator engines.