15-17mm Motorcycle Fork Stem Yoke Mount fits TomTom Bandit GoPro Adapter Central fork stem yoke mount - fits holes 15-17mm Designed to fit your own TomTom Bandit GoPro adapter (not supplied) This central fork stem yoke mount has been developed for use on motorcycles where a handlebar mounting option is not possible or desirable. 3 inch (7.62cm) composit arm offers extra reach.