![]() ![]() Our spring rates were kept just above stock Rubicon spring rates in order to maximize flex and traction off road. The springs are designed to maintain as much up travel as stock while adding to the available down travel, which increases traction, stability, and safety off road. At ride height the spring rate is effectively linear, which is desirable for tunability (shock valving), and predictability (driving feel). This allows us to keep a lower ride height and lots of down travel. This softer initial rate adds to the effective overall length of the spring without adding more lift to the ride height of the Jeep. With the new JL platform we were able to design a dual-rate coil spring with a softer initial rate that is effectively collapsed at ride height. In short, it depends on the application and what constraints we are working with. From our experience, there is a lot of misunderstanding on how multi-rate coil springs work, and why they would be preferred over linear-rate coil springs and vice-versa. Gone are the days where coil spring retainers are required to keep your springs from falling out on the trail. Like most other high-end long travel coil springs on the market, we take advantage of using multiple spring rates to increase the extended travel of the spring. These springs were not considered done until we were confident we had a part that is measurably better than anything else on the market. Each of these prototypes was tested on road and off, all the way from the Rubicon to Colorado. We have gone through many iterations of spring rates, lengths and designs. Instead, we designed our JL coil springs from the ground up, to account for all of the differences in this new platform. We could have re-used existing coil springs already in our portfolio, and they would be close, but close wasn’t good enough. The Jeep JL platform required a new approach to coil springs. Min bump stop spacing listed is the minimum amount of bump stop spacing required to prevent the springs from going into coil bind. 75 inch of front coil spring spacer can be added to level the vehicle using 8017-075 front coil spring spacers. Other models will see more lift.Ĭoil Springs retain the stock rake of the vehicle. Lift heights are based off fully loaded Rubicon models. Unique spring lengths for each corner of the vehicle so it will sit level side to sideįrequency balanced and tuned spring rates to maximize suspension performance on and off roadĪbrasion-resistant black powder coat finish for maximum durability and corrosion resistanceĬoil springs require proper bump stop spacing with Synergy 8057-10 Bump Stop Spacers. Spring rates are only 5-10 percent stiffer than stock for superior ride qualityĬoil spring block heights designed around common bump stop spacings to optimize wheel travel Multi-Rate coil springs allow for longer spring lengths and increased travel Lifetime warranty/guarantee against sagging and breakage Increased wheel travel/articulation/traction Springs are designed to be able to set solid (fully collapse) without overstressing the material and are pre-set from the factory meaning the springs will never sag or set. Springs are proudly manufactured in the United States of the highest quality steel. The ride rate is slightly stiffer than the OEM springs to account for additional weight from bumpers, winches, skid plates and gear. Multi-rate design has a soft initial rate which prevents the spring from coming loose in the coil tower, even with long travel shocks. There are right and left specific springs front and rear to guarantee the vehicle will sit level. Like OEM, our coil springs are unique lengths to account for load differences on each corner of the vehicle. These springs are unique to the JL and not shared with the JK or other vehicles. All springs are multi-rate and have been designed to make a great platform even better. Synergy MFG has designed these springs from a clean sheet for the new Wrangler platform. Synergy MFG Jeep JL / JLU Multi-Rate Rear Lift Coil Springs. ![]()
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