APE -Cylinder Studs

Studs are the preferred fastener choice for high performance engines. Unlike a bolt, a stud uses all of the threads in the case, and it doesn't have to be removed during disassembly which adds wear on the case threads. Studs don't twist like bolts when being torqued down, so torque readings are more accurate.

APE originated heavy duty studs for performance motorcycles and today is recognized as the industry's leading manufacturer and supply studs to all of the top engine builders.