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Progressive - 444 Series Heavy Duty 12in. Shocks

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Features the all new Frequency Sensing Technology (FST) which allows the shocks to sense the frequency of a bump and automatically adjust damping for superior ride qualityDeflective disc valvingAdjust spring pre-load by hand, no special tool neededIncludes a progressive rate spring and is high-pressure gas charged for consistent performanceStandard or heavy duty spring rate with a black or chrome finishSold in pairsLimited lifetime warrantyMade in the USA