What You Get
The Bump Spring kit comes with everything you need to install the springs on your shocks. Included in the box is one Bump Spring, two sets of Spring Caps (14MM and 16MM holes to fit most shock shafts), and two adhesive disks to attach the Spring Caps. The Bump Spring fits over your shock shaft and is located by the Spring Caps. Each Bump Spring comes color codes as to the rate, Blue for CRD1000 is a 1,000 pounds per inch rate, Red for CRD1200 is a 1,200 pounds per inch rate, and Green for CRD1500 is a 1,500 pounds per inch rate.
The height of the springs is: CRD1000 = 2.00", CRD1200 = 2.00", CRD1500 = 2.50". The Spring Caps are 0.120" thick between the spring and shock and spring mounting cup. Two Caps will take up 0.240" of space.
You will need a set of various thickness of packers or spacers in order to set your weight distribution and ride height. These can be ordered seperately if you don't have them from the dealer where you purchased your Bump Springs.
Asphalt Soft Spring Setups
The Bump Springs can be used on any asphalt car that is setup for soft front springs and higher travel. The primary advantages of using the Bump Spring are: 1) a predictable spring rate, 2) a consistent spring rate, 3) very little camber change in the front wheels, 4) easier to setup for handling balance, 5) more consistent handling over long runs, 6) and easier on the tires for better tire life. These units work much better than the bump stops and bump rubbers that have less travel and much higher, rising rate spring rates.
Dirt Late Model Setups
Dirt cars can benefit from the lower attitudes and lower Center of Gravity by using lighter spring rates. By combining softer setups with the Bump Springs, the dirt racer can now have better ride control over the rough surfaces we see on dirt. These units work much better than the bump stops and bump rubbers that have less travel and much higher, rising rate spring rates.