I’m very disappointed in my purchase as we now have an unusable bike. However, if an item is unopened and unused, you can potentially utilize Sunny’s 30-day money-back guarantee. The company also sells replacement parts for items that are out of warranty. Highly reviewed treadmills from Sunny Health & Fitness include motorized treadmills, manual treadmills,… Continue reading Sunny SF-B901 Exercise Bike Review