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SYNERGY MANUFACTURING » Jeep JK » Synergy D30/D44 Heavy Duty Front Ball Joint Sets
Synergy D30/D44 Heavy Duty Front Ball Joint Sets
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Jeep HD Front Ball Joint Set; Upper (L), Lower (R)
Part #:  HD-BALL-JOINTS
Weight:  4.00 lbs
MSRP:  $100.00
Part # 
Synergy High Performance Grease 

Synergy Products are Sold Through Our Dealer Network*:
Synergy D30/D44 Heavy Duty Front Ball Joint Sets Northridge4x4 4Wheel Drive Hardware 4 Wheel Parts QUADRATEC
Morris 4x4 Center Extreme Terrain ORW - Off Road Warehouse CJC Offroad OC Motorsports
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Description:
  • Designed to replace the factory ball joints that are prone to premature wear on lifted vehicles with large off-road tires
  • Fully greasable metal on metal design
  • Machined bearing housing made from sintered graphite, bronze, and 1045 steel for a strong, smooth, bearing surface
  • Ball joint stud made from 4140 steel with an induction heat treated bearing surface for smooth operation and maximum life
  • Uses a larger stud than stock
  • Ball joint boot is made from tear/wear resistant silicone polyurethane
  • Completely eliminates the stock style nylon liner for improved performance and durability
  • Outperforms the factory ball joint assembly and includes all necessary hardware for installation
  • Single Set includes: (1) upper, (1) lower
  • Complete Set includes: 2 Single Sets
  • 12 Month Unlimited-Warranty (see warranty information)
  • Synergy High Performance Grease (4119) is the recommended grease for this product
Part # Year Make Model Notes Ball Joint Set
4120-01 1990-1992 Jeep Comanche
(1) Upper / (1) Lower
4120 1990-1992 Jeep Comanche
(2) Upper / (2) Lower
4120-01 1990-2001 Jeep Cherokee
(1) Upper / (1) Lower
4120 1990-2001 Jeep Cherokee
(2) Upper / (2) Lower
4120-01 1990-2006 Jeep Wrangler
(1) Upper / (1) Lower
4120 1990-2006 Jeep Wrangler
(2) Upper / (2) Lower
4120-01 1993-1998 Jeep Grand Cherokee   (1) Upper / (1) Lower
4120 1993-1998 Jeep Grand Cherokee   (2) Upper / (2) Lower
8009-1201 1999-2004 Jeep Grand Cherokee   (1) Upper / (1) Lower
8009-12 1999-2004 Jeep Grand Cherokee   (2) Upper / (2) Lower
8009-12 2007-2017 Jeep Wrangler
(2) Upper / (2) Lower
8009-1201 2007-2017 Jeep Wrangler
(1) Upper / (1) Lower

Note: Synergy HD Ball Joints are compatible with RCV axles.

Installation Instructions (4120, 4120-01, 8009-12, 8009-1201)



(Lower Ball Joint Cutaway Sample)

(Upper Ball Joint Cutaway Sample)

Synergy HD Ball Joints (above) vs. Mopar Factory Ball Joints (below)
Synergy HD Ball Joints feature a fully greasable sintered metal on bushing design that has high wear resistance. Outperforms the Mopar factory plastic bushing.

 

Click images below for larger view.
Ball Joint Cutaways Samples; Upper (L), Lower (R)
Ball Joint Cutaways Samples; Upper (L), Lower (R)
Jeep HD Front Ball Joint Set; Upper (L), Lower (R)
Jeep HD Front Ball Joint Set; Upper (L), Lower (R)
Jeep HD Front Ball Joint Set; Upper (L), Lower (R)
Jeep HD Front Ball Joint Set; Upper (L), Lower (R)
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