Steel construction bodies with multi-stage velocity nitrogen gas-charged dampers Progressive rate springs provide a softer initial response but resist bottoming better than stock springs Improved damping rates for a more controlled ride 5 position adjustable spring pre-load Chrome-plated covers and springs Custom lengths available for stock ride height or a lowered custom look and Heavy-Duty for 2 passenger use or rider weight over 200 lbs Manufactured to Bikers Choice specifications by Progressive Suspension Sold in pairsNote: Lowering the motorcycle will reduce ground and cornering clearance. To use on FXDWG models the fender must be modified.