The Challenger Plus is a serpentine-style bicycle rack that has several unique features. This bike rack has thicker steel tubing than the Winder Plus rack, making it more durable and longer loops than the Heavy Duty Challenger, which makes it easier to park the bikes. The Challenger Plus allows the use of high security “U” locks to secure the frame of the bicycle to the rack. This classic loop-style bike rack is an economical short-term bike parking option for retail spaces, schools, or other locations where bike parking is a requirement or priority.