OEMs (Original Equipment Manufacturers) suit vehicle with very standard suspension systems. They are aimed at riding comfort and handling a variety of terrains. But, what if you need a suspension kit that is aimed at handling one type of intense terrain? Well, then you need to check out some the aftermarket suspension lifts. These lifts can help serious off-roaders tackle the road. One of the most important factors of a suspension lift kit is the spring rate. Certain spring rates are better equipped to handle slow-speed rock crawling and mudding, and some are better for high speed trail runners. To find out more about spring rate, check out our article at 4 Wheel Online.