Adds non-rotating mass to the rear axle housing for adjusting weight distribution and lowering center of gravity.
Weight is: 52g
Replaces the caps on the ends of the Vanquish Products axles listed below:
VS4-10 D44 Rear Axle
SCX10-II F9 Rear Axle (non-portal)
SCX10-II RockJock Rear Axle
VS4-10 F9 Rear Axle (non-portal)