4PCS RISK Road Bike Disc Brake Bleed Nipple Caps – Dustproof Oil Nozzle Covers for Shimano R7170 / R8170 Bicycle Maintenance Parts

Keep your braking system clean, protected, and performing at its best with the RISK Road Bicycle Disc Brake Bleed Nipple Cover Dustproof Plug Set (RA156 / RA157)—a must-have finishing accessory for serious road cyclists who value precision maintenance and long-term brake performance.

Designed specifically for Shimano road hydraulic disc brake systems such as R7170 and R8170, these precision-fit dust caps help protect your brake bleed ports and screws from dirt, moisture, and debris. Whether you're riding in wet conditions, dusty roads, or daily training sessions, these small but essential parts help keep your braking system clean and reliable.

Crafted from lightweight, durable materials, each dust cap is engineered for a perfect fit without adding unnecessary weight to your bike. With ultra-light construction (as low as ~0.6g per set), they provide protection without affecting performance—ideal for competitive riders and performance-focused cyclists.

The RA156 and RA157 variants are designed for different brake components, ensuring accurate coverage for both bleed nozzles and bleed screws. Their precise dimensions guarantee a secure fit, helping prevent contamination that could affect brake fluid performance or maintenance quality.

Sold in a 4-piece set, these caps come neatly packaged and are easy to install or replace during routine bike maintenance. Whether you're upgrading your current setup or simply replacing lost or worn caps, this accessory is a simple yet effective way to extend the life of your brake system.

Key Features:

• Compatible with Shimano R7170 / R8170 brake systems
• Protects bleed ports and screws from dust & moisture
• Ultra-lightweight design for road performance bikes
• Precision fit for secure installation
• Helps maintain clean and efficient brake performance
• Durable construction for long-term use
• Easy installation and replacement
• Includes 4-piece protective cap set

Keep your braking system race-ready with this RISK disc brake dustproof plug set, designed for riders who demand clean performance, precision maintenance, and long-lasting reliability.