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Description
Synergy 4170-60 Heavy-Duty Ball Joint Set (Smooth)Upgrade the ball joints in your vehicle with the Synergy 4170 60 Heavy Duty Ball Joint Kit from GAP. These ball joints use a metal on metal bearing design, unlike the factory (plastic nylon bearing design), to improve durability and performance. A must for vehicles with lifts and larger tires that see off road use. Get rid of that steering wander and play caused by loose or worn out ball joints. While Jeep may have updated the JL JLU and JT steering
Upgrade the ball joints in your vehicle with the Synergy 4170-60 Heavy Duty Ball Joint Kit from GAP. These ball joints use a metal on metal bearing design, unlike the factory (plastic nylon bearing design), to improve durability and performance. A must for vehicles with lifts and larger tires that see off road use. Get rid of that steering wander and play caused by loose or worn out ball joints. While Jeep may have updated the JL / JLU and JT steering knuckle to use a dual load bearing upper and lower ball joint, they still kept the problematic nylon inner liner which is prone to premature wear. These Heavy Duty Ball Joints feature the latest design used in other ball joint applications with our proven design that are sure to stand the test of time.
(2) Lower Ball Joint
Knurled ball joints are required when replacing ball joints that have enlarged the axle end forging bores
It is up to the installer to verify the proper ball joint style is being used.
Features:
- Fully Greaseable Metal On Metal Design For Prolonged Life
- Compatible With All Aftermarket Axle Shafts (Including RCV's) With No Modifications Needed
- Ball Joint Housing Is Manufactured From 1045 High Carbon Alloy Steel For A Strong, Smooth, Bearing Surface
- Ball Joint Dust Boots Are Made From An Industrial Grade, Wear/Tear Resistant Black Nitro-Butyl Rubber (NBR)
- Ball Joint Stud Is Manufactured From Induction Heat Treated 4140 Chromoly Steel For Maximum Strength & Reliability
- Ball Joint Bearing Race Is Manufactured From Sintered Graphite & Oil Impregnated Bronze For A Strong, Smooth, Bearing Surface
- Ball Joint Bearing Surface Area Is Considerably Larger Than Stock Due To Elimination Of The Inner Nylon Liner For A Longer Lasting Joint
- 12 Month Unlimited-Warranty
4170-60 Heavy-Duty Ball Joint Set Includes:
(2) Upper Ball Joint(2) Lower Ball Joint
Notes:
Metal on metal ball joints require a small break-in period of typically 100-500 miles to fully "seat" the bearing surfaces. During this time the steering may feel "sticky" or slow to "return to center". Once broken in, the steering will be smooth and tight.Knurled ball joints are required when replacing ball joints that have enlarged the axle end forging bores
It is up to the installer to verify the proper ball joint style is being used.
Part Number 4170-60 Includes (2) 4170-01
Synergy High Performance Grease (4119) recommended.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 4
Blue Color is off from photos.
Size: One Size, Color: Blue
The visor is lightweight and feels comfortable however I bought this for the color of blue which was a shade off from the photos. I was expecting more of a royal or blue with a purplish hue. This doesn’t match the blue color I was going for. The visor is great otherwise.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Perfect for beach life
Size: One Size, Color: Light Purple
I got this visor about a week ago and love it. I’ve worn it to Busch Gardens (not on the rides of course), paddle boarding and to the beach. It’s soft and the elasticity is perfect, not too tight but does fine on a windy beach day. It’s sweat absorbing and dries quickly. I washed it in a bra bag in the machine and air dried it, no problems. I’ve already ordered another color!
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Reviewed in the United States on May 20, 2026
★★★★★ 5
LOVE these visors!
Size: One Size, Color: Navy Blue
I love these visors. They are the best that I have ever purchased. They are so comfortable and stay on your head without slipping and sliding while playing golf. I have three colors, and anticipate I'll be buying more colors soon!
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Lightweight and comfy!
Size: One Size, Color: Fluorescent Yellow
Love this visor! Super comfortable and stays in place while running. Not super tight. I am a little worried it might stretch out over time and no longer fit, but as of right now, it is perfect. I ordered it in two more colors!
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Reviewed in the United States on June 1, 2026
★★★★★ 3
Too cheap for its price, not expecting it to last long
Size: One Size, Color: Rose Red
Flimsy and cheap feeling, you can find much better visors on Amazon for a few bucks cheaper.
The bill is small, shorter than expected and it amuses me that the overly-long product “title” mentions being appropriate for men because I believe this visor would look ridiculously small on a normal man’s head. Honestly, fresh out of the package I wondered if I missed some detail about this being child sized.
I do like that it is lightweight and that I won’t have Velcro stuck in my hair, though as an experienced seamstress and crafter I can already tell this is going to lose its elasticity FAST (as other reviewers have mentioned). I do love the color.
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Reviewed in the United States on June 12, 2026