Rear Coil Spring Set KK
Replace factory coil springs with custom made Jeepin by Al
- 2.5" Rear coil springs Jeep Liberty Pair 2008-2012
- 4.0" Rear coil springs Jeep Liberty Pair 2008-2012
- 6.0" Rear coil springs Jeep Liberty Pair 2008-2012
- 8.0" Rear coil springs Jeep Liberty Pair 2008-2012
I Just received a set of JeepinByAl Rear 4 inch springs. I was running the OME 948s on the rear of my KJ with two extra upper isolators and due to the extra weight (steel bumper, heavy skids etc) had even had to add an extra lower. Took everything out except for the stock upper and lower, installed the new 4 inch springs and came out a little higher than I was before with all of the extra iso's. First ride was a 265 mile trip with some one lane unpaved back roads down home for Thanksgiving. Back through some woods/trails on the farm, twisted it up some and all in all they did great. On road ride is better than the OMEs I had before. Off road and on the dirt back roads they soaked up the bumps very well. So far a little over 850 miles on them and would recommend them to anyone looking for an alternative to stacking extra isolators. Another great product coming from Marlin at JeepinByAl.
“Our springs are manufactured from high tensile chrome silicon spring steel”
The high tensile material allows for a more aggressive design which can reduce material within the spring while maintaining spring rate and increasing overall spring travel (less solid height when fully compressed)
“Our springs are shot peened for enhanced spring life”
Technically speaking shot peening of coil springs creates a small indentation on the surface of the spring with multiple impingements overlapping and creating an even layer of residual compressive stress. This prevents/hinders fatigue cracks beginning or growing within a compressively stressed zone. An improved spring life is achieved with upwards of 10 times the spring life over non-shot peened parts depending on working stroke of the spring.
“All springs are preset to improve fatigue life of the spring”
Pressetting, or Scagging as it is termed in Europe, takes a spring that is coiled slightly taller than the desired finished free length and compresses to a specific height. In your case we take the springs to solid. This process induces a residual compressive stress and allows the part to return to it’s “free length” after compression to the specific height it was preset to. Note: that if a spring is allowed to go to coil bind on a regular basis it will eventually destroy the spring due to “coil clash” which is detrimental to the surface of the spring steel.
“Springs are optimally designed to provide greater suspension travel while maintaining a long cycle life”
This is supported by the information provided above; the parts are coiled slightly longer but with fewer coils than our previous design. This will allow the parts to have a life about 10-15 years.
“Our private label line of coil springs are produced in the USA by an ISO approved spring manufacturer with extensive experience in the automotive aftermarket”