The RC4 Podium RD Worldcup STRD was developed for professional racing and offers maximum performance and precision at World Cup level. With a flex ratio of 4:1 (150), the boot ensures optimum power transfer, control, and stability even in the most demanding conditions. Equipped with a low-tolerance cuff for precise control, the RD20 Canting System for individual adjustment, and an inner boot with lacing system for secure hold and high responsiveness, the RC4 Podium RD Worldcup STRD represents state-of-the-art racing technology straight from the race room.