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Old Leaf Pack

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The old leaf pack losing its spring rate and flattening out, bad rubber, or polyurethane bushing can greatly degrade ride quality. It's easy to periodically check the bushings, as over time they become hard and brittle and will crack and tear. Greaseable bushing and shackle bolts are available, which makes it easy to maintain the bushing with a fresh squirt of grease. If your vehicle's ride quality has degraded and the springs seem to still be in good shape, it may just be time to replace the bushings.