Cognito Alpha Joint Standard Upper Control Arm Kit | 2020-2025 Silverado/Sierra 2500HD/3500HD

The Obsidian Vision

The factory upper control arms on the 2020–2025 Silverado and Sierra 2500HD/3500HD are engineered for stock ride height — and the ball joint angle, droop travel limitation, and component wear rate that result from running a leveled or lifted suspension on factory UCAs are a direct consequence of geometry that was never designed to operate at elevated ride heights. The Cognito Alpha Joint Standard Upper Control Arm Kit resolves that geometry deficit with a tubular-style arm that corrects the ball joint angle for leveled and lifted applications, improves allowable droop travel for better ride quality, and includes Cognito's Alpha joint and maintenance-free pivot bushings — all finished in semi-gloss black powder coat and manufactured in the USA. A 2-hour DIY install delivers corrected front suspension geometry that extends the service life of every component in the front suspension system at the elevated ride height.

Concierge Fitment Guarantee

Every order is manually reviewed by our technicians to ensure 100% compatibility with your build before we ship.

Engineering Breakdown

• Corrects the ball joint angle on leveled and lifted 2020–2025 Silverado/Sierra 2500HD/3500HD applications by repositioning the upper ball joint mounting point to restore the designed operating angle at the elevated ride height — reducing the accelerated ball joint wear, CV axle boot stress, and tie rod angle deviation that result from running factory UCAs at lift heights they were not designed to accommodate.
• Improves allowable droop travel beyond the factory UCA's limit, providing the additional suspension articulation required for superior ride quality at elevated ride heights — adequate droop travel is the engineering prerequisite for all suspension components to operate within their designed range and last their intended service life.
• Eliminates factory UCA pivot bushing maintenance requirements through the inclusion of maintenance-free pivot bushings that do not require periodic lubrication — reducing long-term ownership cost and the service intervals associated with factory rubber bushing replacement on the T1 2500HD/3500HD platform.

The Cognito Alpha joint is a high-angle ball joint designed for the angular demands of lifted and leveled applications — providing the articulation range required to maintain proper ball joint operating geometry through the full suspension travel arc at elevated ride heights where factory ball joints operate outside their designed angular range. The tubular-style arm construction provides the strength required for heavy-duty platform loads while maintaining the geometry corrections that the arm's design delivers. Maintenance-free pivot bushings are pre-installed and require no periodic lubrication. Semi-gloss black powder coat finish. Made in the USA.

Audit Table

Verified Fitment (OFAS Standard)

✅ CONFIRMED — Chevrolet Silverado 2500HD:
2020–2025 Chevrolet Silverado 2500HD Base, Custom, WT, LT, LTZ, High Country 2WD/4WD

✅ CONFIRMED — Chevrolet Silverado 3500HD:
2020–2025 Chevrolet Silverado 3500HD Base, WT, LT, LTZ, High Country 2WD/4WD SRW & DRW

✅ CONFIRMED — GMC Sierra 2500HD:
2020–2022 GMC Sierra 2500HD Base 2WD/4WD
2020–2025 GMC Sierra 2500HD SLE, SLT, AT4, Denali 2WD/4WD
2023–2025 GMC Sierra 2500HD Pro 2WD/4WD
2024–2025 GMC Sierra 2500HD Denali Ultimate 2WD/4WD

✅ CONFIRMED — GMC Sierra 3500HD:
2020–2022 GMC Sierra 3500HD Base 2WD/4WD
2020–2025 GMC Sierra 3500HD SLE, SLT, AT4, Denali 2WD/4WD SRW & DRW
2023–2025 GMC Sierra 3500HD Pro 2WD/4WD SRW & DRW
2024–2025 GMC Sierra 3500HD Denali Ultimate 2WD/4WD SRW & DRW

❌ REQUIREMENTS:
Requires front alignment immediately after installation — correcting the ball joint angle changes caster and camber from factory specification and must be aligned before driving.
Verify installed lift height is within the arm's designed operating range before ordering — contact the OFAS team to confirm compatibility with your specific lift height and front suspension configuration.
For maximum front suspension system correction at extreme lift heights, consider the Cognito SM Series Ball Joint Upper Control Arms, which use boxed sheet-metal construction and are included in Cognito's 10-inch and 12-inch lift kit packages for the T1 platform.

Installation & Technical Notes

Estimated Install Time: 2-Hour DIY Install (with basic hand tools, floor jack, and jack stands — alignment appointment required immediately after)
Alignment Required: Yes — professional front alignment is mandatory immediately after installation. The corrected ball joint angle changes caster and camber from factory specification and must be corrected before any driving.
Pivot Bushing Installation: Maintenance-free pivot bushings are pre-installed — no pressing required. Verify bushings are fully seated before installing pivot hardware.
Torque Specifications: Refer to Cognito's included instruction sheet for all UCA mounting hardware torque values — torque with the suspension at ride height under load.
Ball Joint Inspection: After installation, verify the Alpha joint boot is undamaged and the joint moves freely through its full angular range before driving.

Wheel & Tire Fitment

The Cognito Alpha Joint Standard Upper Control Arm Kit corrects front suspension geometry for leveled and lifted applications on the 2020–2025 Silverado/Sierra 2500HD/3500HD platform. Tire size compatibility is determined by the installed lift height and wheel backspacing — contact the OFAS team to verify tire and wheel fitment for your specific lift height and build configuration.

Our team is standing by to verify your specific lift height and front suspension configuration to confirm 110-91244 is the correct UCA kit for your build. Purchase with confidence; we review every build.