2020-2026 Duramax Upper Control Arm Kit (KRUCA20)

Note: This kit does not fit AT4X or ZR2 models with DSSV shocks

Upgrade your GM HD’s front end with Kryptonite’s heavy-duty upper control arms. Built for strength and precision, these arms restore alignment, reduce binding, and handle lifted or stock suspensions with ease. Perfect for diesel enthusiasts seeking long-lasting performance and confidence on the road or trail.

Kryptonite Part Number: KRUCA20

• Laser-cut steel construction 
• Fully boxed design 
• Pre-greased ball joints 
• Polyurethane bushings 
• Bolt-on installation 
• Compatible with factory or aftermarket shocks
• Hardware included

Includes: 

• 1 x Kryptonite Upper Control Arm Pair 
• 4 x Control Arm Sleeves
• 8 x Control Arm Polyurethane Bushings
• 2 x Kryptonite Bolt-in Upper Ball Joints
• 1 x Complete Hardware Package 

• Clearance may be limited when using stock wheels with oversized tires (Wider than 11.50") 
• Compatible with stock, leveled, or most lifted applications

Kryptonite No Fine Print Lifetime Warranty: Kryptonite steering and suspension components are warranted 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 will replace it.

Your product(s) must be registered within 90 days of purchase at kryptoniteproducts.com. Click the Warranty tab on the home page and follow the Warranty Registration link. Proof of purchase is required. Without proper registration, warranty claims will be void. 

Click here for installation instructions

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