Ultra Racing suspension and vehicel body struts to improve drive performance and safety Rear Lower Tiebar for Mercedes E-Class 03-06 W211 High-strength strut for stiffening the car body and the suspension Ultra Racing suspension and vehicel body struts to improve drive performance and safety Rear Lower Tiebar Vehicle manufacturer: Model: Mercedes E-Class 03-06 W211 Are dome struts / wishbone struts subject to registration? We contacted Tune it Safe on this subject and received the following information: If struts and/or stabilisers are screwed to standard fixing points, they are not subject to registration. But this does not mean that all police officers know this. Our recommendation: In order not to let such discussions arise, have them registered.