News & Advices Novelties Flexion of C4 Mustang HT fins Novelties Flexion of C4 Mustang HT fins August 4, 2016 Innovative, super reactive and with a uniform flexion; the C4 Mustang HT in the version 30 are also quite rigid. International 86,125FansLike14,201FollowersFollow2,550SubscribersSubscribe Instagram