This heavy duty steel item locks your Jr. Dragster Polar primary unit together by bolting the cover to the post. Thread size is 9/16-18 and fits our No-Spin Polar Evolution Clutch Post. Bearing retaining ring is included.
The steel bushing on this clutch post is keyed to the post to prevent it from spinning. The Jr. Dragster No Spin Polar Clutch Post features a 9/16-18 tapped hole which can be used together with our Polar Cover Lock.