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"I have the JKS ACOS system. I'll explain why. I have the RE 4 1/2 longarm lift. According to RE will allow for 37" tires which I have. I like the bigger tires. It's what I want. However, adding the additional weight of steel bumpers, a winch, tire carrier and a 37" spare brought the ride height down to better suite a 35" tire not a 37". Add to that the additional weight of tools, recovery equipment, cooler full of food, beer, etc... and additional passengers, as I have a four door, I am pretty much back to stock height, with 37" tires of course. My tires are constantly stuffed in the fenders while on trails. One guy even asked me if my lift was stock. I called RE and they would not offer a solution that would alter their system. I felt that I had to do something because I wasn't happy with my setup. So I talked to a guy about putting 2" coil spacers on. He suggested the JKS ACOS system pointing out that I would not be committed to a specific ride height. If youre not happy after putting on a fixed height spacer then what do you do? I knew there was a significant price increase. We all know how much. Still I bought into the idea of customizing the ride height to suit my needs. They can be adjusted front and back, left and right. Level it out, rake it forward, whatever. The front spacers are adjustable 1" to 2-1/2" and the rears are 2" to 4". Kind of like an insurance policy. They never seem like a good idea until you need it.

So here's my thinking and I could be wrong. Aftermarket lifts while well thought out and engineered still have limitations relative to the vehicle and it's intended use. That's why we are always finding ways to tweak things to better suit our style of driving. And vendors provide us with new products in their never ending endeavour to improve our rigs. Is the JKS ACOS system worth the price over fixed height coil spacers? In my case yes. I think it is subjective to a persons wants and needs. Oh, I forgot to mention. They look cool too. "

Rob Galletta, Customer
JK Owners forum

Factory Protection Plus Badge

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Drivtrain 5year 60K Mile Protection Drivetrain Warranty

A 5 year - 100,000-mile plus drivetrain warranty is available for Jspec equipped vehicles as a Supplemental Drivetrain Limited Warranty to match your new vehicle express drivetrain limited warranty Jeep. The protection applies to any Jspec eligible suspension systems purchased on or after November 1st, 2013.

Drivtrain 5year 60K Mile Protection
What is FMVS No. 126?

When you see the FMVSS Compliant Symbol you will know with confidence this application has been tested and successfully passed the Federal Motor Vehicle Safety Standard No. 126 compliance test. This highly specialized test was performed to prove the installation of the particular Jspec suspension system, with specified wheel and tire package will not compromise the performance and effectiveness of the vehicle’s Electronic Stability Control (ESC) system keeping you safer on the road.


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