As @imprezaworks said, it definitely looks like the end of a spring.
Not an alien then?
A spring as in suspension?Yep, an alien.
Looks like part of a spring.
Not whilst I've owned it. Would a suspension spring have that rubber bit on it though?Has it had a change of suspension?
Ok cheers. Probably nothing to worry about then. Looks all rusted up so must be mega old.Yes, on the rear they do. It helps keep the spring seated when it’s not compressed.