Ignition Box Rubber Vibration Mount Kit (4 Per Pack) These heavy-duty bearing retainer plates

These heavy-duty bearing retainer plates are precision-engineered and manufactured out of heavier steel than stock to ensure that they do their job

Bolt on application for an easy upgrade and includes hardware

Design improvements to the splines

easy-to-read timing marks

These are direct plug replacements for OEM coils

Ignition Box Rubber Vibration Mount Kit (4 Per Pack) These heavy-duty bearing retainer platesIn many performance applications, such as off road, drag race, marine, and oval track racing, strong vibration forces can be transmitted through the chassis to your Speedmaster ignition units and coils. These Speedmaster vibration mounts are designed to help protect your ignition box or ignition coil from extreme vibration and the damage associated with it.