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BBK polyurethane front spring isolators for 1979–2004 Mustang are direct replacements for factory rubber isolators and are recommended when installing lowering springs. Polyurethane resists drying and cracking that degrades OEM rubber, preventing springs from contacting metal and transmitting harsh vibration. Sold as a pair, front kits include four pieces and are offered to maintain quiet, consistent spring seating over time.
BBK 86-04 Mustang Front Spring Isolators - Polyurethane
