The Sidi Mag-1 Rear Upper is a replacement part specifically designed for Mag-1 and Mag-1 Air boots. It serves as a rear calf cover, offering additional protection and ensuring a snug fit for riders. This part is perfect for replacing worn or damaged components, helping to maintain the boot's structural integrity. The Mag-1 Rear Upper is easy to install, making it an essential part for keeping your boots in top condition. Sidi Mag-1 Rear Upper