Cable ferrules are one of those small parts that get overlooked until you're mid-install and realize you're short one. Jagwire's chrome-plated brass ferrules in 5mm are the standard end cap for shift housing, sized to fit any 5mm-OD shift cable housing on the market. The 10-pack covers a full bike's worth of housing ends with a few spares left over for the parts bin.

Brass is the material of choice here for a reason. It's soft enough to crimp cleanly onto the housing without splitting, but rigid enough to seat squarely against frame stops and shifter bodies so the housing doesn't deflect under cable tension. The chrome plating keeps corrosion at bay where the ferrule meets the frame — a spot that sees a lot of moisture intrusion on bikes ridden year-round. Unplated brass tarnishes quickly and can stain the paint around frame stops; the chrome finish keeps things looking clean over the long haul.

These are 5mm shift-specific ferrules, so don't confuse them with the 4mm version used on some compression-less brake housing or the larger 5.5mm caps that occasionally show up on older systems. If you're running standard SP41 or any of the common index shift housings, this is the right size.... Read More