Progressive 00-17 Harley-Davidson Softail 422 Series Shocks w/RAP Heavy Duty - ChromeBrand Progressive Part Number 422 4102C Category Suspension Shocks and Struts Condition Brand New Original Manufacturer Packaging Shocks hidden under the frame make common adjustments difficult on the Softail chassis. Not anymore! RAP (Remote Adjustable Preload) combines high performance shocks with a remote preload adjuster. Conveniently located behind the left passenger peg, the RAP system allows for easy tuning of the shocks to account for changing