Yes they split, not too difficult to separate the parts are held together with a plastic connector which is just a tight fit.
Put one end in a vice and knock the other end with a soft hammer.
I once shortened some to fit a saloon, but looking back I'm not sure what I was thinking...
https://www.the75andztclub.co.uk/for...of+barsI'm
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How to view a car - everything you need to help you inspect a used car
VIS motor tester avalible to local members
Injector removal tool and auto gearbox pressure tester now available