Fabtech K1129M Uniball Upper Control Arm Lift System with Stealth Shocks - 3

The Fabtech K1129M is a complete 3.5-inch lift system engineered specifically for 2019-2020 GM Silverado and Sierra 1500 pickups. This comprehensive suspension upgrade combines premium uniball upper control arms with front coilover spacers and rear blocks to deliver increased ground clearance and enhanced off-road capability without compromising ride quality.

Uniball Upper Control Arms:

The heart of this system is the heavy-duty uniball upper control arms, precision-constructed from .120-inch wall, 1.50-inch OD 4130 chromoly tubing for exceptional strength and durability. These UCAs feature high-quality 1-inch FK stainless steel PTFE-lined uniball bearings in place of traditional ball joints, providing increased longevity in rugged off-road conditions while delivering a more positive on-road feel. The uniball design eliminates suspension bind at full droop, allowing the suspension to articulate freely through its entire range of travel.

Front Lift Components:

The 3.5-inch front lift is achieved using precision-engineered steel spacers that work with your factory coilover shocks to maintain the stock ride quality. This design preserves the factory damping characteristics while providing the lift needed for larger tires and increased ground clearance.

Rear Lift System:

The rear of the vehicle is lifted 1.5 inches using tapered blocks and u-bolts, paired with Fabtech's Stealth shock absorbers for optimal performance and ride quality at the new suspension height.

Key Features:

• 3.5-inch front lift with steel coilover spacers
• Premium 4130 chromoly uniball upper control arms with .120-inch wall thickness
• 1-inch FK stainless steel PTFE-lined uniball bearings for smooth articulation
• 1.5-inch rear lift blocks with u-bolts and Stealth shocks
• Increased fender clearance for 33-inch tires
• Eliminates suspension bind at full droop
• Works with factory coilover shocks
• Suspension can be restored to stock if needed
• Designed for both on-road comfort and off-road durability

This system provides a professional-grade suspension upgrade that enhances your truck's capability while maintaining excellent ride quality for daily driving. The combination of premium materials and engineered design makes the K1129M an ideal choice for enthusiasts seeking both performance and reliability.