Chevrolet Silverado 3500HD Suspension Lift Kit – Cognito with Elka 2.5 RR Shocks, SM Series Ball Joint Upper Control Arms, and Cognito Block & U-Bolt Kit for 2020–2024. A focused package to improve control, comfort, and correct front-end geometry.

Elka 2.5 remote-reservoir shocks use Dual-Speed Compression adjustment and damping optimized for HD use to cut vibration and harshness, helping reduce cabin squeaks and rattles. Cognito SM Series boxed steel upper control arms correct ball-joint angle on lifted or leveled setups and expand droop travel; maintenance-free ball joints and pivot bushings come pre-installed, with a semi-gloss black powder coat. The Cognito Block & U-Bolt Kit supplies 1-inch rear steel blocks (semi-gloss black) and heavy-duty zinc-plated U-bolts.

Features

• Fits 2020–2024 Chevrolet Silverado 3500HD
• Elka 2.5 RR shocks with Dual-Speed Compression adjusters
• Smoother ride with reduced dive and rear bucking
• SM Series ball joint UCAs, boxed construction, semi-gloss black
• 1-inch rear block and zinc-plated U-bolts

Questions about fitment, towing, or complementary parts? Call us. We have locations in Austin, Texas and the Los Angeles, California area offering professional installation and customization: 512-982-9393 (TX), 562-981-6800 (CA).

Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.

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