X-TRACT X-TREME is a new and improved formulation against our highly popular X-TRACT. It reacts faster and more intensely, clings for longer onto wheels and paintwork due to its thickened formulation. It also has the benefit of an added Cherry Perfume. X-TRACT X-TREME is a powerful but pH balanced bleeding iron remover. It is formulated to dissolve brake dust and safely remove iron from wheels and paintwork.