Ultra Racing suspension and vehicel body struts to improve drive performance and safety Rear Sway Bar 27mm for BMW 3-Series M-Sport E46 99-05 Upgrade sway bar / anti roll bar for better handling and drive performance Ultra Racing suspension and vehicel body struts to improve drive performance and safety Rear Sway Bar Vehicle manufacturer: BMW Model: 3-Series M-Sport E46 99-05 Measurement: 27mm 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.