What is the Weight and Dimensions of the Flywheel on the Diamondback Fitness 1260sr ? Dan October 01, 2020 22:26 Follow The Diameter of the Flywheel in the 1260ub Upright Bike is 265mm and it weighs 22lbs. Click to learn more about the Diamondback Fitness 1260sr Upright Bike! Related articles What is the Weight and Dimensions of the Flywheel on the Diamondback Fitness 1260ub ? Are there any authorized service technicians near me? Where can I download a product manual? Do I have to pay sales tax on orders from this site? How long will it take for me to receive my order? When will it ship? Comments 0 comments Please sign in to leave a comment.