Teraflex HD Dana 30/44 Upper & Lower Ball Joint Kit without Knurl for 2008-2017 Wrangler JK

Teraflex HD Dana 30/44 Upper & Lower Ball Joint Kit without Knurl for 2008-2017 Wrangler JK (Set of 4)TeraFlex JK/JKU Heavy-Duty Ball Joints are engineered to handle the increased load caused by oversized tires and offset wheels. FITS:JK Wrangler (2-door) w/ Dana 30 or 44 axleJKU Wrangler Unlimited (4-door) w/ Dana 30 or 44 axleINCLUDES:Upper ball joints w/out knurl – pairLower ball joints w/out knurl – pairUPPER BALL JOINT FEATURESExtremely hard sintered wear bushings to handle extreme side load demands w/out failureMagnesium Phosphate coating to inhibit corrosion throughoutHeat treated 4140 chromoly ball/stud & 1045 carbon steel housingFactory-style serrated flange nut & grease fittingLOWER BALL JOINT FEATURESHard alloy tool steel slotted wear plate for ball/stud to socket wear protectionWear plate features grease channels for increased flow through entire joint ensuring longevity & predictable operationMagnesium Phosphate coating to inhibit corrosion & friction throughoutHeat treated 4140 chromoly ball/studHuge 30mm (1.18″) ballFactory style serrated flanged castle nutBall joint pre-load adjustability provides the end user w/ near effortless wear adjustment (kit includes Preload Adjustment Tool)Low-profile single lip dust seal eliminates torn conventional dust boot concernsAdjustable ball stud retaining ring for accurate initial & future preload adjustments that can be done w/out any axle disassemblyAdjustable preload can be performed w/ simple hand toolsAdjustable end cap w/ two zerk fittings allow greasing access from either side w/out axle shaft removal even w/ larger RCV shaftsDual helical grease grooves machined in the retaining ring allow spent grease to exit through the low-profile sealLow-profile seal prevents contaminants, while allowing spent grease to evacuate from the ball jointNOTE:We recommend Ball Joints w/out Knurls (# 3442002 or # 3440000) as they will not score the inner knuckle & open up the bore.We also offer Ball Joint w/ Knurls (# 3442022 or # 3440020) for ball joints that have a loose press fit in the inner knuckle due to repeated ball joint replacement or if knurled ball joints have been installed in the past.Item # 3442002