UMS 5-125cc SILENCER LOCK CONE ( X 10 QTY / Pack)

This is the silencer lock cone for the UMS 5-125cc engine, the five-cylinder 125cc four-stroke radial from UMS.

The part itself is the cone that locks the exhaust joint.

Why it is replaced: exhaust joints loosen with heat cycles and the lock cone prevents it. Supplied as a pack of 10, which is how these small parts are normally bought — you rarely need just one.

Fitting note: Check the cone is not bottoming before it locks.