S&S CYCLE Circuit Breaker Drive Gear Shaft for Big Twin 1936-1969 (Part #31-2037) Hardware Group and valve-to-piston clearances during installation

and valve-to-piston clearances during installation

the 46 mm mono tube is machined from hard-anodized billet aluminum and features a lightweight high-flow piston design for unmatched handling and bike control

Designed to function on virtually any motorsport vehicle as it operates with a CR2032 replaceable battery

providing a more relaxed riding posture

S&S CYCLE Circuit Breaker Drive Gear Shaft for Big Twin 1936-1969 (Part #31-2037) Hardware Group and valve-to-piston clearances during installationCircuit Breaker Drive Gear Shaft Big Twin '36 '69 The S&S CYCLE Circuit Breaker Drive Gear Shaft (Part #31 2037) is a high quality replacement component designed specifically for Harley Davidson Big Twin models from 1936 to 1969. Manufactured in the USA, this drive gear shaft ensures reliable performance and durability in your motorcycle's engine assembly. Featuring a robust build, it is engineered to withstand the stresses of high performance riding