If you are looking to lift the back end of your 2018 Softail model without the big cost of a new shock, then this is for you. The shock extension is a replacement eyelet that installs on the swing-arm side of the shock. It is made of aluminum with sealed, double row needle bearings, already pressed in place. Installing this longer eyelet will give you approx 1-3/4" of lift at the rear axle. Because the factory spring is unaffected, as well as shock angle which keeps your stock spring rate and valing the same as factory. Makes for greater ground clearance, as well as making it easier to get that front tire off the ground. Requires removal of shock and compressing the spring to install.