Fabtech FTS21271 Ball Joint Upper Control Arm Lift System - 1.5

The Fabtech FTS21271 is a ball joint upper control arm system designed specifically for 2019-2024 Chevrolet Silverado 1500 Trail Boss and GMC Sierra 1500 AT4 4WD models. This component provides a 1.5-inch lift height increase when used as part of Fabtech's complete lift kit systems (K1152 or K1152M).

Key Features:

• Thick-wall DOM (Drawn Over Mandrel) tubular upper control arms for maximum strength and durability
• Heavy-duty extended range ball joints designed for proper suspension geometry at lifted ride height
• Corrects suspension alignment for proper alignability after lift installation
• Eliminates suspension bind at full droop travel
• Compatible with factory coilover shock systems
• Allows clearance for 33-inch tires when combined with complete lift kit

This system addresses the unique suspension geometry of Trail Boss and AT4 models, which come with a factory 2-inch lift. The tubular upper control arms maintain proper front suspension geometry at the increased ride height, ensuring correct camber and caster angles for safe driving and tire wear. The heavy-duty ball joints are engineered to handle the stress and extended range of motion required in lifted suspension applications.

Note: This is a component box that is part of complete lift kit systems K1152 or K1152M. When combined with the complete system, the vehicle will achieve an effective 3.5-inch total lift height (factory 2" + added 1.5").