Join us for Back Alley Bikes Garage Sale - Bike Sale on April 20, 2026, from 12:00 PM to 4:00 PM at Back Alley Bikes, 3611 Cass Ave (Alley/Rear Entrance), Detroit, MI 48201, United States. Back Alley Bikes Garage Sale - Bike Sale offers a wide selection of used bikes priced from $25–$175, sold as-is, along with accessories like lights and locks—perfect for anyone looking to gear up affordably while supporting a local community bike shop.