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mikes2 · 06-07-16, 02:15 PM

It's the shape of the insert - the cap is designed to fit around it to clamp it in place.

You also don't use bump stops if you go with Bilstein as they have internal ones

06-07-16, 02:15 PM	#12
mikes2 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: Polmont Posts: 2,617	It's the shape of the insert - the cap is designed to fit around it to clamp it in place. You also don't use bump stops if you go with Bilstein as they have internal ones __________________ 1991 90 quattro 20v sport 1991 90 quattro