These isolators are for those using Stifflers Lower Control Arm FLCA-FT01 who want to maintain their current ride height. Stifflers arms are designed with a 1" drop, but for those who wish to maintain their current ride height, using these isolators will keep your truck at it's current stance. Made of HyperFlex material by Energy Suspension, these fit snugly over the existing coil spring just like stock isolators.
Stifflers - Spring Isolator 1" Lift for Ford F-150 - HYWX-300-ES46106G