Our Progressive Series springs are high quality 10-leaf units fabricated by Deaver with high grade 5160 "AMERICAN MADE" steel. A higher leaf count spring allows the use of thinner leaf material that yields a more flexible progressive leaf stack, or pyramid, producing a much smoother spring rate curve throughout the complete suspension cycle. The even, linear compression rate curve of our Progressive System spring is the primary key to excellent ride quality.
Other design features include diamond cut inner leaf ends minimizing shear points, anti-friction pads inserted between the leafs for a smoother ride and quiet operation, full military-wrapped spring eyes for superior durability, and OEM bushings.
Combined with properly valved high performance shock absorbers, the ride is enhanced beyond belief.
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