The Sidi Mag-1 Tecno 3 Magnetic Long is a replacement tensioning system designed for Sidi Mag-1 and Mag-1 Air boots. It offers precise adjustment and secure closure using an innovative magnetic mechanism. This durable component ensures that your boots stay snug and safe during every ride, providing both reliability and comfort. Easy to install, it is a must-have for those looking to maintain the peak performance of their boots.