Coil spacers
are lift kit components that can add anywhere from 1 to 3 inches of ground clearence to your vehicle without the need of replacing the springs entirely. Used frequently for off-roading and the display of large rims, coil spacers often are made in sizes unique to the make and model of the vehicle for which they are intended. Many coil spacer kits come with all the mounting hardware necesssary for installation.
Compression
Cheap spacers may be built from materials that compress over time, reducing lift and occasionally causing a variety of issues. Polyurethane spacers are often the best choice to prevent compression and are gradually replacing older rubber varieties.
Installation Problems
Several problems can be caused by improper installation of coil spacers. Not taking care to seat the springs into the spring pockets during re-assembly can cause them to dislodge later, which can be dangerous due to the high amount of energy that can be released as they do so. For some vehicles, such as Jeeps, installing larger spacers nearing 3 inches will require a great deal of ancillary work, such as bending the transmission shifter, relocating the transfer case and extending brake lines and fuel hoses. The largest source of problems for coil spacers relates to the spacing for larger heights.
CV Issues
Some makes and models of vehicles may experience an inordinate amount of wear or stress on the CV after coil spacer installation, especially at higher rises. To avoid such issues entirely, use coil spacers to achieve lifts under 2 inches and different lift kits to achieve higher lifts.
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