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Ships within 48 hours · Estimated delivery Jul 17 - Jul 22
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Synergy 4170-12 Heavy-Duty Ball Joint Set (Knurled)Replace the ball joints in your vehicle with the Synergy 4170 12 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
Replace the ball joints in your vehicle with the Synergy 4170-12 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. The 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.
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
4170-12 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 4170-12 Includes (2) 4170-04
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
4.3 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Muy bellas
Size: 6.5, Color: Tan Leather
Para pies finos. Son elegantes, cómodas y de buena calidad. Pedir medio size más
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
★★★★★ 5
Comfy and classy
Size: 9, Color: Tan Leather
Awesome heels! A perfect match to my spring dress.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
★★★★★ 2
Too narrow at the toes, even for narrow feet
Size: 7, Color: Black Leather
Too narrow at the toe. I have narrow feet, but I could feel my toes being squished as soon as I stood up in these.. Bummer.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
★★★★★ 5
A chique set of sunglasses for any trendy woman
Color: Black/Dark Grey, Lens Width: 53 Millimeters, Color: Black/Dark Grey, Lens Width: 53 Millimeters
I love these pair of sunglasses! I’ve never been really able to wear them before lasek. But it’s important to now and the glasses are a true 100% UV blocking. Packaging is really nice done and the green case complements the emerald piece in the glasses themselves. It came with a cleaning cloth which is nice to keep in your purse.
The sunglasses have a dark tint. These pair frame my face nicely and I have a rounder face. It’s not uncomfortable on the nose bridge and the frame is quite durable. It’s lightweight and there’s no pressure on the ears. They are well made and are perfect to dress up an outfit. I prefer simple frames with a special touch and the green emerald piece take these up a notch . So excited for summer!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 8, 2023
★★★★★ 5
Wow! Quality glasses with a beautiful design.
Color: Black/Dark Grey, Lens Width: 53 Millimeters
It seems like you're frequently given the option between fashion or quality in the sunglass marketplace. A lot of the fashion eyewear simply falls short on lens quality, durability, or comfort. These glasses have it all. The lens are fantastic and clear, the quality of the frame is very high end, and the comfort of wearing is incredible.
Then there is the fashion aspect. These are true swarovski crystals and are every bit as gorgeous as you would expect from the name.
I'm thrilled with these sunglasses!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 30, 2023
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