Replace your Jeep's factory ball joints with Synergy MFG's Dana 30/44 Heavy Duty Ball Joint Set. These ball joints employ a metal on metal design to improve durability and performance.
Fits:

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

Features:

• Compatible with all aftermarket axle shafts (including RCV) with no modifications needed
• Fully Greasable metal on metal design for prolonged life
• Ball Joint bearing surface area is considerably larger than stock due to elimination of the inner nylon liner
• Ball joint housing is manufactured from sintered graphite, bronze, and 1045 steel
• Ball joint stud is manufactured from induction heat treated 4140 steel for maximum strength
• Ball joint dust boot is made from wear/tear resistant black nitro-butile rubber (NBR)
• 12 Month Unlimited-Warranty
• Synergy High Performance Grease (4119) recommended

Notes:

• Metal on metal ball joints require a small break-in period of typically 100-500 miles
• 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