Jagwire Shift End Caps

These end caps, or ferrules, act as the interface between your shifter housing and the frame or derailleur. Their main job is to provide a clean, secure seat for the housing while sealing out dirt and moisture to keep your shifting smooth.

The rubber O-rings create a tight seal at the point where the cable enters the housing. This prevents grit, water, and debris from contaminating the inner cable, which helps maintain consistent, crisp shifting performance over time.

Aluminum ferrules are more durable and offer a more secure, rigid fit, making them a great choice for performance builds or frequent riders. Plastic ferrules are lightweight and cost-effective, perfectly suitable for standard maintenance and general recreational use.

No, these are specifically designed for 4.0mm shifter housing. Brake housing typically has a larger diameter, so these will not fit correctly.

No special tools are required. You simply slide the ferrule onto the end of your shifter housing before inserting it into your frame stops or derailleur. Just ensure your housing ends are cut cleanly and squarely for the best fit.