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Synergy Manufacturing HD Adjustable Ball Joint Kit, Knurled - JK

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Your Price: $500.00
Part Number: 4127KN
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After 5 years of development and over 100,000 test miles, our Heavy Duty Adjustable Jeep JK Ball Joints are here! This is the last set of ball joints you will ever have to buy. Limited Lifetime Warranty. Tighten up your steering for good with our patent-pending (# 16/020894) design which is fully adjustable, serviceable, and rebuildable without having to press the ball joints back out of the axle end forging yokes (C's). These ball joints never have to come back out. Available in knurled and non-knurled versions to fit all vehicles regardless of what type of ball joints were installed previously. Lower ball joint bearing surfaces are CNC machined from 4140 steel, heat-treated, induction hardened, and ferritic nitrocarburized to make these the longest-lasting, longest wearing ball joints on the market. Kit includes all 4 ball joints to service one Jeep and the adjuster tool for adjusting the preload on the lower ball joints.

Fits:

  • 07-18 Jeep Wrangler JK
  • 99-04 Jeep Grand Cherokee WJ

Benefits:

  • Tightens sloppy steering
  • Designed to last the life of the vehicle
  • Never need to replace ball joints again
  • Best in class price/performance ratio
  • Limited Lifetime Warranty

Features:

  • Kit includes all 4 ball joints and lower ball joint adjuster tool
  • Patent Pending lower ball joints are adjustable so they always have the correct amount of preload
  • Knurled and non-knurled ball joint housing options to fit any vehicle
  • Lower ball joints are rebuildable on the vehicle without removal
  • Lower Ball Joint bearing surfaces are CNC machined from 4140 steel, heat-treated, induction hardened, and ferritic nitrocarburized for extreme wear resistance
  • Low profile dust boots are made from thick nitrobutile rubber (NBR) to protect the joint from contaminants and eliminate any chance of tearing
  • Zerk fittings included for trouble-free maintenance

Notes:

  • Synergy 4119 High-Performance Grease recommended
  • Knurled ball joints required when replacing knurled ball joints that have enlarged the axle end forging bores
  • Non-Knurled ball joints recommended for replacing non-knurled ball joints
  • Compatible with RCV axle shafts

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