The Timbren 1" Spacer For Raised Frame Vehicles part # A25723-90AH00 are sold individually, you'll simply need to order one for each side or multiples depending on the lift. They are also offered in a 1/2" version as part # TA25722-90P00. You'll want the space between the spring and strike plate/axle to be about 1/2"-1-1/2". view full answer...