Fits:
1999-2006 Chevy Silverado 1500
1999-2006 GMC Sierra 1500
2007-2018 Chevy Silverado 1500 (OEM Cast Steel UCA ONLY)
2007-2018 GMC Sierra 1500 (OEM Cast Steel UCA ONLY)
2019+ Chevy Silverado 1500
2019+ GMC Sierra 1500
Important fitment details:
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Direct replacement for Kryptonite KRUCA99, KRUCA12 & KRUCA19 Upper Control Arms.
- Compatible anywhere a Moog K6136 ball joint is specified.
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For 2007-2018 trucks, these ball joints only fit where cast steel control arms were originally equipped. They will NOT fit stamped steel or aluminum factory control arms. See image below for identification.
Features:
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Forged High-Strength Housing – Optimized HD forging increases articulation and provides added clearance to prevent binding at full suspension travel.
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Heat-Treated Chromoly Ball Stud – Significantly stronger than factory studs and highly resistant to bending under heavy loads.
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Metal-on-Metal Internal Design – Eliminates weak factory-style internals for long-term durability in towing, off-road, and high-load applications.
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Powdered-Metal Internal Races – Designed for extreme wear resistance and consistent performance over the life of the joint.
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Coil-Spring Preload System – Maintains consistent internal tension as the suspension cycles, reducing looseness and extending service life.
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Premium Class 10.9 Hardware – Includes Kryptonite-supplied high-strength mounting hardware for secure, reliable installation.
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Greaseable By Design – Apply 4–6 pumps during installation, then maintain with approximately 1-2 pumps every 5,000–7,000 miles. Designed to purge contaminants without overfilling the boot.
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Corrosion-Resistant Finishes – Black E-coat housing with a gold zinc-plated cap for long-term corrosion protection and a premium appearance.
Description:
Whether you’re servicing your Kryptonite KRUCA99, KRUCA12, or KRUCA19 Upper Control Arms or replacing a worn ball joint in another aftermarket suspension system, this heavy-duty bolt-in ball joint is built to handle far more abuse than conventional replacements.
Designed around the industry-standard Moog K6136 mounting pattern, it is a direct replacement for the Kryptonite control arm kits listed above and many aftermarket upper control arms from Cognito, CST, FTS, Fabtech, and other manufacturers using a bolt-in upper ball joint.
A massive ball stud provides exceptional strength while allowing increased articulation for leveled and lifted trucks. The thick heavy-duty rubber boot keeps contaminants out, while Kryptonite’s exclusive grease relief port makes routine maintenance simple and helps extend service life.
Includes:
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1x Kryptonite Bolt In Ball Joint with mounting hardware
Torque Specs:
- Mounting hardware torque is 22 lb·ft
- DO NOT USE AN IMPACT GUN
Warranty:
(Kryptonite No Fine Print Lifetime Warranty)
Kryptonite Steering & Suspension components are warrantied for life to their original purchaser. This warranty covers manufacturer defects, premature wear, or breakage. Race it, jump it, off‑road it, wreck it, lift it—we don’t care. If you can break it, we’ll replace it.
Your Kryptonite products must be purchased through an Authorized Dealer, and Warranty Registration completed within 90 days of purchase. Complete warranty details can be found [here].
