Dedicated bleed adapter for the S4 caliper plugs into the bleed port and seals the system to minimize air contamination and fluid loss. Compatible with S4 Calipers and Guide Ultimate brakes.
Designed for us with new Guide Ultimate brakes, features a push/pull style locking port plug that makes bleeding faster and easier
Also works with Avid Pro Bleed Kits for any SRAM S4 caliper brakes
