Pro 4 Series Ball Joints
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Manufacturers looking to transition to Probearing ball joints will appreciate the universal housing design, which matches the outer dimensions of most 1” uniball cups. The pivot is centered within the housing like a uniball, allowing for a seamless swap without altering the geometry.
· Sintered self-lubricating bearings
· SAE4140 ball stud
· SAE4140 housing
· 76 degrees of articulation
· Zink yellow coating
· (1) Pro 4 Series Ball Joint
· (1) Snap Ring
· (1) Nylon Nut
Compatibility
- 2005-2023 Toyota Tacoma
- 2004-2023 Nissan Titan
- 2007-2021 Toyota Tundra
- 2003-2024 Toyota 4Runner
- 2016.5-2018 GM 1500
- 2017-2023 Colorado ZR2
- 2021+ Ford F-150
- 2019-2025 GM 1500
- 2004-2020 Ford F-150
- 2015+ Colorado
- 2009-2025 Ram 1500
- 2011-2025 2500
- 2022+ Toyota Tundra
- 2024+ Toyota Tacoma
- 2025+ Toyota 4Runner
- 2021+ Ford Bronco
- 2007-2016 GM1500
* Not OEM replacement, developed for aftermarket control arms. These ball joints are not intended to limit the suspension.
Specifications
| Ball stud | SAE4140 ball stud |
|---|---|
| Housing | SAE4140 housing |
| Articulation | 76° |
| Finish | Zink yellow coating |
Why Probearing
- Probearing makes ball joints, bushings, rod ends, spherical bearings and related accessories designed specifically for the off-road market.
- The company is based in Lakeside, California: 10050 Marathon Pkwy, Suite 113, Lakeside CA 92040.
- Products carry a 1-year limited manufacturer warranty against defects in material and workmanship.
- Real people answer the phone and email: (619) 828-3570 · sales@probearing.com.
FAQ
Which part number fits my vehicle?
Use the Compatibility table above. For example, RB1U39A fits 2005–2023 Tacoma, RB1U39B fits 2007–2021 Tundra and 2003–2024 4Runner, and RB1U39E fits 2022+ Tundra, 2024+ Tacoma and 2025+ 4Runner. These are for aftermarket control arms, not OEM replacement.
Do they need grease?
No. They use sintered self-lubricating bearings, so there's no grease fitting to service.
Can I swap these in place of a uniball?
Yes, that's what they're designed for. The housing matches the outside of most 1" uniball cups, and the pivot sits centered like a uniball, so geometry doesn't change. Confirm with your arm manufacturer.
How much articulation?
76 degrees. They aren't meant to act as a suspension limiter.
What's included?
(1) Pro 4 Series Ball Joint, (1) Snap Ring, (1) Nylon Nut.
What is the warranty?
One year from purchase against defects in material and workmanship, for the original purchaser. Probearing will repair or replace at its discretion. To claim, email or call with proof of purchase. The warranty does not cover installation or labor, misuse, improper installation, or normal wear.
Can I return it?
Yes, within 30 days of receiving it, in the original package and condition, if it is not installed or damaged and was bought directly from Probearing. A 3% processing fee applies. Shipped orders also have a 7% restocking fee, and neither return shipping nor the original shipping cost is refunded. Custom products are non-refundable.
Do you ship internationally?
Yes. Most orders ship via UPS or USPS. International buyers pay import taxes and fees. Orders over $500 need a signature. For bulk or freight orders, contact sales@probearing.com for a quote.
Shipping, returns & warranty
Shipping
Ships within the US and internationally, mostly via UPS or USPS, and shipping is calculated at checkout. Orders over $500 require a signature. If a package arrives damaged or short, email sales@probearing.com with your order number and photos, keep all packaging, and don't install the parts.
Full policy: Shipping policy
Returns
Returns are accepted within 30 days, unused and in the original packaging, with the fees listed above.
Full policy: Refund policy
1-Year Limited Manufacturer Warranty
Covers defects in material and workmanship under normal use, for the original purchaser. Probearing will repair or replace at its discretion. Contact sales@probearing.com or (619) 828-3570 with proof of purchase.
Details: Warranty
Questions? Talk to a real person.
Email sales@probearing.com or call (619) 828-3570
Call (619) 828-3570Email sales@probearing.com