The new SRAM Guide RSC is packed with ride-enhancing performance that makes every new trail a trusted old friend. We started from scratch, to create the perfect combination of braking reliability and control. Brand-new SwingLink™ technology provides more power, silky-smooth modulation, less deadband and better lever-feel than you’ve ever experienced. Steep-line confidence. Deep-corner dominance. Ride every trail like you own it. KNOW YOU CAN. Now featuring the World Championship-winning S4 caliper with Bleeding Edge™ and Heat Shield technologies.