Throttle cables like any part wear over time, and eventually fail. Typically the steel inner rusts or wears, causing it to break or become stiff.

Clutch Cable for Vespa PX Models. PX 125 150 200 T5PX125 PX150 PX200.

TIP: It is highly recommended to thoroughly pre-lube the new cable with Inox, or a similar product to prevent rusting and prolong the life of the life of the cable!