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2017-2017 BMW 330i xDrive
Available with arm restraints for an additional $100
2008-2010 Ford F-250 Super Duty Styleside 81
1970-1974 GMC G25/G2500 Van
Swift Coil-Over Helper Spring - 2.625" Tall - 45 lb. R030015S 2017-2017 BMW 330i xDriveUnlike our assist springs, our helper springs are specifically designed to have a minimal effect on the spring rate of the main coilover spring. Helper springs allow the spring to stay on mounted on the coilover perch when the shock is under negative or zero load, also known as droop travel. It is ideal to run helper springs on setups where you cannot preload the main spring due to height issues or when experiencing springs coming loose from the
