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TC8-XTR4 kit features an Xtreme pressure plate for the most demanding driver
NX4-HDR4 kit features ACT's most popular Heavy Duty pressure plate
TL2-HDG4 kit features ACT's most popular Heavy Duty pressure plate
6224022 is a 6-pad rigid race disc made with high quality ceramic friction materials
BBK 86-04 Mustang Rear Spring Isolators - Polyurethane (2546) 8004 TC8-XTR4 kit features an XtremeThese BBK Performance polyurethane 79 04 Mustang rear spring isolators are recommended to be used when installing lowering springs on your 79 04 Ford Mustang. Overtime the factory rubber isolators will dry out crack and eventually turn to dust causing the springs to then rub against the bare metal control arms which will cause harsh vibration noises to transmit through the vehicle's chassis when driving. These BBK polyurethane rear spring Isolators