Upgrade your Shoei GT-Air II helmet with the CNS-1 Base Plate Full Set, designed specifically for a perfect fit. This set, which includes two base plates (one for the left and one for the right), two plastic washers, and four aluminum screws, is sold as a pair to ensure a seamless installation. The integrated spring mechanism in the base plates guarantees a tension-tight closure of the visor, enhancing your helmet's functionality and safety. Ideal for those looking to replace old or damaged base plates, this set promises easy setup and a secure visor fit.