aFe CONTROL RaceRunner front leveling coil springs raise the front of your JL approximately 2 IN from factory ride height for improved ground clearance over rough terrain, overall vehicle control and offers a level ride height. These RaceRunner coil springs perform with factory shocks or our RaceRunner series shocks. Front Leveling Springs: These Coil Springs Offer 2 IN Front Lift to Improve Handling and Provide More Ground Clearance. Cold Formed Chrome Silicone Materials: Precision Designed and Manufactured Form Quality Materials For Durability and Longevity. Easy Installation: Factory Designed Configuration, No Modifications Required.