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Synergy Jeep JL/JT Heavy Duty Ball Joints Knurled (1 Upper/1 Lower), manufacturer part number 4170-04, is the exact new Synergy ball joints product shown in this listing. Select it by the verified year, make, and model applications below. Confirm the axle, steering design, mounting position, lift height, dimensions, and every current manufacturer note before ordering.
Key Features
- Compatible with all aftermarket axle shafts (including RCV's) with no modifications needed
- Fully greaseable metal on metal ball Joint bearing surface has considerably larger area than stock due to elimination of the inner nylon liner for a longer lasting joint
- Heavy duty, heat treated stud prevents unwanted movement and premature failure
- Improves road manners and corrects sloppy steering
Fitment
| Years | Make | Model | Application Notes |
|---|---|---|---|
| 2018-2026 | Jeep | Wrangler | Confirm axle, steering design, lift height, and all manufacturer notes |
| 2020-2026 | Jeep | Gladiator | Confirm axle, steering design, lift height, and all manufacturer notes |
Specifications
| Brand | Synergy Manufacturing |
|---|---|
| Manufacturer Part Number | 4170-04 |
| Product Type | Ball Joints |
| Application Type | Vehicle Specific |
| Condition | New |
| Pricing Policy | Manufacturer MAP protected |
What's Included
One new Synergy ball joints product identified by manufacturer part number 4170-04, plus only the hardware and components expressly supplied by Synergy for this exact part number.
About Synergy Manufacturing
Synergy Manufacturing develops heavy-duty steering, suspension, axle, and fabrication components for Jeep, Ram, and Ford truck applications.
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Frequently Asked Questions
How do I confirm Synergy 4170-04 fits?
Match the exact year, make, model, axle, steering design, lift height, mounting location, dimensions, and all published exclusions. Platform codes are application notes and are not vehicle model names.
Are similar Synergy parts interchangeable with 4170-04?
No. Thread, tube diameter, mounting width, bolt size, axle design, steering geometry, and included hardware can differ between similar-looking part numbers.
What should be checked after installing Synergy 4170-04?
Verify fastener torque, steering travel, brake-line and ABS-wire routing, suspension articulation, wheel and tire clearance, and alignment. Recheck the assembly after the initial settling period.
Installation
Follow the current Synergy instructions and vehicle service procedure for part number 4170-04. Use the specified tools and torque values, verify every clearance and line route through full steering and suspension travel, and complete an alignment when steering or suspension geometry changes. Professional installation is recommended.
Ball Joints
Ball joints restore controlled suspension movement and steering geometry on trucks, SUVs, muscle cars, Jeeps, and daily drivers. Shop OE-replacement and heavy-duty upper and lower ball joints for Silverado, F-150, Ram, Wrangler, Tacoma, 4Runner, Camaro, Mustang, Civic, Jeep, GM HD, and Ford Super Duty applications. Black Ops Auto Works carries 99 ball-joint SKUs across pressed-in replacements, bolt-in service kits, heavy-duty off-road upgrades, control-arm replacement joints, boots, and specialty steering components. Filter by year, make, model, trim, engine, and drivetrain before ordering. What Ball Joints Do Ball joints connect the control arm to the steering knuckle while allowing the suspension to move and the wheel to steer. Worn joints can cause steering looseness, uneven tire wear, clunks, and poor alignment stability. Upper and Lower Locations Many vehicles use upper and lower ball joints, but the configuration varies by suspension design. Verify the exact axle position ...
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Suspension
Suspension parts and complete kits for cars, trucks, SUVs, Jeeps, and off-road builds are stocked at Black Ops Auto Works. Shop coilovers, lowering springs, lift kits, leveling kits, shocks and struts, sway bars, control arms, tie rods, ball joints, bushings, chassis bracing, alignment hardware, air suspension, and complete stage kits from Bilstein, KW, Ohlins, Fox, KING, ICON, BC Racing, Silvers, Eibach, H&R, Swift Springs, Whiteline, Energy Suspension, Moog, SPC Performance, Rough Country, ReadyLIFT, BDS, Skyjacker, Air Lift, Firestone, and Black Ops Auto Works. Start with a matched shock and spring package or a full coilover kit, then layer in sway bars, chassis bracing, and camber adjustment hardware. Every part is filterable by year, make, model, trim, and drivetrain to confirm fitment before ordering. What This Category Covers Suspension is the highest-leverage handling upgrade on any vehicle. A properly matched shock, spring, and sway bar package produces measurable i...
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Synergy Mfg
Shop Synergy Manufacturing steering, suspension, axle, brake-line, wheel, and fabrication components by exact manufacturer part number and verified vehicle application.Synergy Product Families Heavy-duty tie rods, drag links, track bars, and steering stabilizers Control arms, sway bars, end links, springs, and suspension systems Axle, brake-line, wheel, bracket, bushing, and service components Application-specific upgrades for supported Jeep, Ram, and Ford vehicles Choosing the Correct Synergy PartConfirm the exact manufacturer part number, year, make, model, axle, steering design, lift height, mounting position, dimensions, and every current Synergy application note. Engine, trim, drivetrain, and platform details remain application notes rather than vehicle model tags.About Synergy ManufacturingSynergy Manufacturing develops heavy-duty steering, suspension, axle, and fabrication products for demanding street, towing, and off-road automotive applications.Related Collections Synergy ...
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