Our Camburg coil spring preload kits are designed to lift and level the front of your '17-20 Gen2 Ford Raptor while maintaining the factory ride quality with the OEM Fox coilovers. These collars preload the coil spring, providing increased compression travel for off-roading. They are CNC machined from aerospace quality 6061-T6 aluminum and come in black, gold, KINETIK gray, and red versions. Installation requires removing the coilovers from the truck and using a heavy-duty spring compressor. We offer two lift options: 1.5" for leveling with 35" tires and 2" for larger 37" tires. These collars are not compatible with aftermarket coil springs on the OEM stock shocks. For the '19-20 models with electronic FOX Live Valve suspension, slight modification of the plastic wire retainer is necessary. Additionally, when using the factory OEM 17" wheel or positive offset wheel, a 1/4" - 3/8" wheel spacer may be required for larger tires. We recommend a zero offset wheel. Combine these collars with our KINETIK series billet upper control arms for improved handling and geometry correction.