Sideon Power Base Rubber Joint US Cup
The Sideon base is a brilliant base that features a nice low profile and all the protection and confidence you'd require, designed for cup extensions.
This Sideon base is a standard US cup base that is designed to fit with all modern day mast tracks. The base has a nice low profile and wide plate allows for the weight to be distributed evenly across the contact points. There is too a rubber protector which takes some of the shock from the rig away from the board offering some further protection also.