• Gas charged• Multi-stage, velocity-sensitive internal valving automatically adjust to riding conditions• Include chrome springs and end covers• Designed specifically for cruisers• Progressively wound steel spring provides superior ride and handling• Adjustable spring pre-load cams allow for different load and ride characteristics• Double-walled steel construction for durability• Available in several lengths for custom applications• 05-06 VTX1800C/F require ZZ70729 shock bolts