The SRAM Hauptdichtungskit S900 Hydro is a genuine service kit designed specifically for SRAM S-900 hydraulic road brake systems. As a main seal kit, it includes the critical sealing components needed to restore the tight, leak-free performance of your hydraulic brake lever or caliper. Over time, seals can wear, harden, or become contaminated, leading to spongy lever feel, reduced braking power, or small fluid leaks. Replacing these parts with original SRAM components helps bring your braking system back to its intended performance and reliability.
This kit is ideal for riders who want to extend the life of their existing SRAM S-900 Hydro brakes rather than replacing the entire system. Using a proper seal kit during a scheduled brake service ensures consistent modulation, predictable braking, and long-term durability. When combined with fresh hydraulic fluid and a correct bleed procedure, the SRAM Hauptdichtungskit S900 Hydro supports smooth lever action and dependable stopping power in all conditions, whether you ride in the mountains, commute daily, or train year-round.