The RISK RL224 / RL309 Hydraulic Brake Bleed Funnel Adapter is designed to convert compatible MTB brake bleed funnels for use with Shimano road hydraulic shifters.

This adapter allows riders and mechanics to use a mountain bike-style oil bleed funnel on compatible road hydraulic brake levers, making brake bleeding and oil replacement more convenient.

Made from lightweight aluminum alloy with anodized blue finish, the adapter features an M7×P0.75 external thread and M5×P0.8 internal thread. Each set includes 1 adapter and 1 O-ring.

The RL224 is the old version, while the RL309 is the upgraded version with wider compatibility for newer road hydraulic shifters.

Key Benefits

• Road Shifter Bleed Adapter
  Converts MTB bleed funnel use for compatible road hydraulic shifters.
• Aluminum Alloy Body
  Lightweight, durable, and resistant to regular workshop use.
• Threaded Connection Design
  External thread: M7×P0.75
  Internal thread: M5×P0.8
• Compact and Lightweight
  Small tool, easy to store in a brake bleed kit or workshop toolbox.
• Includes O-Ring
  Comes with a sealing O-ring for better sealing during brake bleeding.
• Two Versions Available
  • RL224: old version
  • RL309: upgraded version with extended compatibility
• Useful for Home and Shop Maintenance
  Suitable for bike mechanics, repair shops, and experienced home users.

Suitable For

• Shimano road hydraulic shifters
• Road bike hydraulic disc brake bleeding
• Hydraulic brake oil replacement
• MTB bleed funnel conversion
• Bike repair shops
• Home mechanics
• Road bike maintenance
• Brake service tool kits

Compatibility Guide

RL309 is recommended if you need compatibility with newer Shimano road hydraulic shifters.

Notes

• This product includes adapter and O-ring only.
• Bleed funnel, brake lever, handlebar, brake oil, and other tools shown in images are for display only and are not included.
• Please confirm shifter model compatibility before purchase.
• For hydraulic brake bleeding, follow the brake manufacturer’s official service procedure.
• Make sure the O-ring is correctly installed before use to prevent oil leakage.
• Manual measurements may vary slightly.
• RL224 old version may be discontinued after stock is sold out.

Product Details