Progressive Suspension Black 440 Series Shock - 120/170 Spring Rate (lbs/in)

Video Product Info: Progressive Suspension: 412, 430, 440 Series Shock Comparison 5:33
Video Product Info: Concept To Completion 1:36
Video Product Info: Progressive Shows How To Set Shock Sag 6:4
Video Product Info: Progressive Suspension Video 1:36
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