Jagwire Sealed Shift End Caps

Sealed end caps feature integrated rubber O-rings that create a barrier against moisture, grit, and trail debris. This prevents contaminants from entering your housing, which keeps your shifting action smoother for longer and reduces the frequency of cable maintenance.

These are designed specifically for 4.0 mm derailleur housing. They will not fit brake housing, which typically uses a larger 5.0 mm diameter.

No special tools are required. You simply slide them onto the end of your derailleur housing before inserting the housing into your frame stops or derailleur body.

This is a shop-quantity pack intended for mechanics or riders who maintain multiple bikes. It ensures you have plenty of spares on hand for full cable replacements or when trimming housing during adjustments.

Yes, they are an excellent choice for mountain bikes. The sealed design is specifically engineered to keep out the grit and mud that typically fouls shifting performance in off-road environments.