Progressive Suspension PS-11-1578 Fork Spring Kit for Sportster XL1200X 16-21 w/49mm Fork Tubes & Standard Spring Rate

• Spring rates have been chosen to reduce front end ″dive″during braking, yet still provide excellent ride comfort

• Lifetime fork springs warranty

• Progressive Rate Fork Springs have several advantages over straight rate springs, advantage of a rising rate resistance to compression this helps in varying road conditions from small road imperfections to pothole filled roads

• The benefit of this is that the spring can be soft enough at the start of the travel to offer a ″plush″ride, yet be firm enough at the end of the travel to soak up the big bumps

• Ideal performance improvement when installing chrome lower forks

• They eliminate sag, reduce nose dive under braking, improve stability and increase ride comfort

• Sold in sets that include correct spacers for the application