Progressive Quik Preload System Upgrade Kit The Progressive Suspension Quik Preload System (Qps) Upgrade Kit simplifies the preload adjustment process on PS 444 Series and 944 Series shocks for H-D Touring models. With the QPS Upgrade Kit, riders no longer need to remove the saddlebags to modify the sag for varying load scenarios, making transitions between single and two-up riding configurations effortlessly quick. Features: Compatible with 444 and 944 Series shocks with Standard, Heavy Duty, and Super Duty spring rates Sealed gear driven preload adjuster with 17mm of adjustment Make quick preload adjustments without removing saddlebags Replaces original 444/944 Series upper shock cap 30 complete turns of preload fine adjustment Adjusts with 8mm socket wrench (not included) Improves comfort and performance Black Anodized finish Lifetime Limited Warranty Sold as a pair Made in USA