JK: Dana 30/44 HD Ball Joint Kit w/out Knurl – Upper & Lower – Set of 4


2 in stock (can be backordered)


TeraFlex JK: HD Ball Joints are engineered to handle the increased load caused by oversized tires and offset wheels. Fits all JK Wrangler/Unlimited models with Dana 30 or Dana 44 front axles.

• Heat treated 4140 chromoly ball/stud and 1045 carbon steel housing

• Magnesium Phosphate coating to inhibit corrosion throughout Upper Ball Joint:

• Extremely hard sintered wear bushings to handle extreme side load demands w/out failure

• Factory-style serrated flange nut and grease fitting Lower Ball Joint:

• Hard alloy tool steel slotted wear plate for ball/stud to socket wear protection

• Wear plate features dual helical grease channels for increased flow through entire joint ensuring longevity and predictable operation

• Factory-style serrated flanged castle nut

• Low-profile single lip dust seal prevents contaminants

• 30mm (1.18″) adjustable ball stud for accurate initial and future preload adjustments using simple hand tools

• 2 grease zerk fittings allow greasing access from either side


• JK Wrangler (2-door)

• JK Wrangler Unlimited (4-door)

Additional information

Weight 2 kg
Dimensions 15 × 15 × 15 cm






TeraFlex manufactures components for the Jeep Wrangler including premium suspension systems and performance shocks, heavy-duty axles and low-range gearing, body armor, and more. With our roots dating back to the 1950s beginning as MEPCO (Military Equipment Parts Company), a distributor of Jeep parts and accessories, we have gained a vast knowledge of the various CJ/Wrangler platforms. In the fall of 1996, TeraFlex began manufacturing parts in-house to fulfill the need for heavy-duty off-road suspension pieces and equipment for the then-new TJ Wrangler. Our experience and knowledge has allowed us to create the unique and innovative parts and accessories that fill out our product line today ensuring TeraFlex’s dominant hold on the Jeep market.