High-quality internal crossover O-ring seal designed for StopTech performance calipers and high-performance multi-piston braking systems. This specialized seal ensures a leak-proof connection between the caliper halves, maintaining consistent hydraulic pressure. Engineered from premium heat-resistant EPDM compound to withstand extreme track and street conditions. Compatible with various Brembo-style fixed calipers and StopTech ST-series units. Sold as a single unit. Individual components: 1x Crossover O-Ring Seal (P/N 760.05222).