BMW E23 Coilovers - TITAN SP3 Suspension KitBMW 7 Series E23 (19771986) on TiTAN SP 3 Coilover Suspension Kit. Fully Adjustable Height 30 Click Damper Setting Monotube Construction 2 Year Warranty Note: Please indicate if your current strut housing is 46mm or 51mm when ordering. The SP 3 is the optimal choice for street use and occasional spirited driving. If you have a modified car that occasionally sees the track, this suspension is what you need for a stylish, performance oriented ride with