Progressive Harley Quick Preload System Upgrade Kit for 444/944 Series Shock - Black - 5046-100 0 The Progressive Suspension Quik Preload System (QPS) Upgrade Kit makes adjusting the preload on PS 444 Series and 944 Series shocks easier than ever before. With the QPS Upgrade Kit installed on 444... $439.95 Quick view add to cart Add Wish List
