Alcon ALACSK3535EW900SG Rear Brake Caliper Seal Rebuild Kit for CIR50 Calipers

The Alcon ALACSK3535EW900SG is a genuine OEM rear brake caliper seal rebuild kit designed for Alcon CIR50 calipers equipped with 34.9mm (1.375") pistons. This single kit contains all the seals required to fully rebuild two rear brake calipers, making it an efficient and cost-effective maintenance solution for performance brake systems.

Each kit includes both the inner piston pressure seal and the outer wiper seal for every piston bore. The pressure seals feature Alcon's anti-knockback (X900) design, engineered to maintain consistent pedal feel and eliminate the need to pump the brake pedal — even under demanding conditions. Wiper seals provide an additional layer of protection by excluding dirt and contaminants from the caliper bore.

Key Features:

• Genuine Alcon replacement brake caliper seal kit
• Rebuilds two CIR50 rear brake calipers per kit
• Designed for calipers with 34.9mm (1.375") pistons
• Includes both pressure seals and wiper seals for all piston bores
• Anti-knockback seal design for immediate, consistent pedal response
• High-temperature materials resist hardening and heat damage
• Wiper seals included for dirt and contaminant exclusion
• Reduces long-term maintenance costs and extends service intervals

Regular inspection and seal replacement is essential for maintaining the performance and safety of high-performance brake calipers. Using genuine Alcon seals ensures proper fit, function, and compatibility with your Alcon braking system.