Treadmill Doctor Reebok 8400C Treadmill Running Belt Model RBTL971050 Review HelpfulOwl Treadmill Belts June 14, 2018September 2, 2018Exercise & Fitness, Exercise Machine Parts & Accessories, Sports & Fitness, Sports & Outdoors, Treadmill Doctor 0 Comment This is the replacement walking belt for the Reebok 8400C Model RBTL971050 Walking Belt Size