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JKS#2211 (1-3.5" Front ACOS Spacers for Jeep JL) - $280.00 msrp [more info]
JKS#2711 (1.3.5" Front ACOS Pro Spacers for Jeep JL) - $850.00 msrp [more info]

Coldwater, MI-  JKS Manufacturing continues to launch components and accessories specially designed for the all new 2018 Jeep Wrangler JL. The latest addition to our lineup of accessories are new ACOS and ACOS Pro front coil spacer kits designed to allow JL owners to dial in the right height from 1-3.5" of lift for improved performance. Over the years the ACOS/ACOS Pro spacers have been the go to choice for Jeep builders and racers looking to increase ride height, make adjustments larger or small to compensate for winch bumpers, engine swaps and other heavy accessories, and with the available integrated hydraulic bump stop on the ACOS Pro allows owners to tune for high-speed offroad use.

Jeep JL ACOS - The concept of a coil spacer isn't new, it increases ride height by installing on top of the coil spring raise the vehicle. Where a standard coil spacers falls short is it doesn't factor in bump stop positioning and cannot be adjusted at each corner to compensate for ride height needs with heavy aftermarket accessories. That's why the JKS ACOS (Adjustable Coil Over Spacer) was developed. These next generation coil spacers utilize billet construction with a threaded body to allow for ride height adjustment between 1-3.5" of lift at each corner to compensate for uneven load distribution and heavy aftermarket accessories, settling springs or just to simply get more front end ride height to install larger tires.These spacers are technically advanced using precision machining for proper fitment and adjustability. Along with ride height adjustment the ACOS design integrates an adjustable bump stop to correct bump stop engagement for a range of ride heights. The bump stop assembly uses a new Dura-Thane isolator to prevent noise transfer and improve durability for sustained punishment offroad. These ACOS spacers are compatible with stock coil springs as well as most aftermarket springs and lift kits. ACOS is packaged fully assembled making to speed up installation time. Dial in the front ride height of your new Jeep JL with ACOS from JKS Manufacturing.

Jeep JL ACOS Pro - Building on the design and function of the ACOS, JKS also offers a premium product designed to take your Jeep JL to the next level with the integration of a hydraulic bump stop. Ride height remains the same allowing adjustability between 1-3.5" of additional ride height using the adjustment collar on threaded body, however in place of the standard bump stop is a 2.0 hydraulic bump stop to bring race proven off-road damping technology to your new JL. These hydraulic bump stops allow for progressive compression damping to prevent the suspension from bottoming out for improved performance in a ride range of terrains. The bump stop itself can be adjusted to dial in bump stop engagement at a wide range of lift heights and hydraulic pressure can be adjusted using the bleeder valve at the top of the bump stop. Don't just ACOS, go ACOS Pro for next level race-proven performance while dialing in ride height on your new Jeep Wrangler JL. 

View other JKS Products for the 2018 Jeep Wrangler JL at


JKS Manufacturing includes the Factory Protection Plus Program

  • 5-year, 100,000-mile Drivetrain Warranty
  • FMVSS No.126 ESC System Compliance
  • JKS's Limited Lifetime Warranty
About JKS:   Since 1989, JKS Manufacturing has developed some of the most widely used and respected products for Jeep vehicles in the off-road industry. From the original Quick Disconnect™ brand of quick-release swaybar disconnect systems, to the innovative ACOS Pro™ variable height coil spring spacer with integrated bump shock, JKS® only manufactures products that provide unquestionable benefits to vehicle performance. It's no coincidence that those who know Jeep performance best choose JKS products for their own vehicles.

© JKS Manufacturing, 491 W. Garfield Ave. Coldwater, MI 49036

(517) 278-1226 | |

Factory Protection Plus Badge

The Ultimate Lifted Suspension Protection Coverage and it’s FREE!

Limited Lifetime Warranty

All JKS products are protected by a limited lifetime warranty to ensure they are free from manufacturer defects in material and workmanship so you can go with confidence knowing your JKS parts are covered.

  • - 5 Year, 100,000-mile PLUS Protection
  • - Free, no cost protection for JKS customers
  • - Could save thousands on possible repairs
  • - Easy online application process
  • - Available for most late model vehicles
Drivtrain 5year 60K Mile Protection

When you see this symbol you will know with confidence this application has been tested and successfully passed the Federal Motor Vehicle Safety Standard (FMVSS) No. 126 test. This highly specialized test was performed to show the installation of this particular J-Rate suspension system, with a specific tire and wheel package would not compromise the performance and effectiveness of the vehicle’s Electronic Stability Control (ESC) system.

Drivtrain 5year 60K Mile Protection

The cherry on top for the industry leading Factory Protection Plus Program is the Supplemental Limited Warranty offered at no additional cost to the customer. This warranty is designed to supplement the factory drivetrain warranty on each vehicle and provides the extra peace of mind knowing your Jeep is protected. All J-Rated lift systems include this supplemental coverage to match either the factory 5-year/100,000-mile drivetrain warranty offered.


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