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Synergy Manufacturing Heavy Duty Upper and Lower Ball Joints; Knurled (18-22 Jeep Wrangler JL)

Item J164802-JL
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Market Price $172.50 You Save 13% ($22.50)
Our Price

$150.00 (kit)

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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Heavy-Duty Upper and Lower Ball Joints
      • Eliminates Steering Wander
      • Improves Off-Road Performance
      • Suitable for Your Lifted Jeep
      • 1045 High-Carbon Alloy Steel Ball Joint Housing
      • Induction Heat-Treated 4140 Chromoly Steel Ball Joint Stud
      • Industrial-Grade Black Nitro-Butyl Rubber (NBR) Ball Joint Dust Boots
      • Sintered Graphite and Oil-Impregnated Bronze Ball Joint Bearing Race
      • Compatible with All Aftermarket Axle Shafts
      • Fully Greaseable Metal-on-Metal Design for Prolonged Life
      • Larger Ball Joint Bearing Surface Area for Added Durability
      • Sold as a Pair
      • Professional Installation Recommended
      • Synergy’s 12-Month Unlimited Warranty
      • Fits 2018-2022 Jeep Wrangler JL Models


      Improves Off-Road Performance. These Synergy Heavy-Duty Upper and Lower Ball Joints; Knurled are excellent replacements for your Jeep’s factory ball joints. They are suitable for your Jeep with a lifted height and larger tires to improve off-road performance and eliminate steering wander and play. They feature a greasable metal-on-metal design for prolonged life.

      Premium, Extra-Tough Construction. These upper and lower ball joints have a 1045 high-carbon alloy steel housing for a robust and smoother bearing surface. They also have a ball joint stud with induction heat-treated 4140 Chromoly steel construction for maximum strength and stability. Furthermore, they feature industrial-grade black nitro-butyl rubber (NBR) dust boots and sintered graphite and oil-impregnated bronze bearing race for extra durability and long-lasting performance.

      Professional Installation Recommended. Given the complexity of the task, it’s highly recommended to contact a qualified mechanic to install these upper and lower ball joints onto your Jeep. The procedure may take about 4 to 6 hours to complete.

      Synergy’s 12-Month Unlimited Warranty. These upper and lower ball joints are warrantied by Synergy with a 12-month unlimited warranty upon official purchase. You’re free to contact customer service or visit Synergy’s website if you have further questions.

      Application. These Synergy Heavy-Duty Upper and Lower Ball Joints; Knurled fit the 2018-2022 Jeep Wrangler JL models.

      Technical Note. When it’s time to grease these ball joints, it’s recommended to use Synergy’s High-Performance Grease (sold separately). These ball joints also require a short break-in period before the steering will be smooth and tight.


      Synergy Manufacturing 4170-04

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Upper and Lower Ball Joints
      • Mounting Hardware

      Customer Reviews (1)

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        Reviews of Synergy Manufacturing Suspension products have an average rating of 5.0 out of 5

          Questions & Answers

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