was chatting to the guy on the koni stand at A S I , and he said that the abarth (black) struts and the aftermarket (gold) were , indeed , slightly different , as abarth particularly set the spec for each car. when i mentioned shorter bump stops , he said this wasnt recomended, as there is something at the bottom of the strut that can break if piston goes down too far, just thought it was worth a mention. i have the abarth ones , and theyre just superb. well worth the money.