The Hellwig EZ-990 Medium Duty Helper Spring kit is great for medium duty loads. Simply mounts under the factory axle U-Bolt plates to help restore sagging springs and stabilize your vehicle. These helpers come as a pair and have a million mile warranty.
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Q: Is there any drilling required?
A: No there is no drilling required to install the 991 helper springs onto your Toyota. The U-Bolts required to install these specific helper springs bolt right into the leaf that is nearest to the axle