Fabtech 4" Sport Suspension System w/Performance Shocks – 2025 GM 1500 4WD Trail Boss & AT4 (K1231)

Upgrade the stance, ride quality, and off-road capability of your GM truck with the Fabtech 4-inch Sport Suspension System. Designed specifically for 2025 Chevrolet Silverado 1500 Trail Boss and GMC Sierra 1500 AT4 4WD models, this system provides increased ground clearance, improved suspension performance, and an aggressive lifted appearance while maintaining excellent drivability.

Engineered specifically for Trail Boss and AT4 equipped trucks, this suspension package incorporates Fabtech's proven suspension design along with Performance shock absorbers for enhanced ride control and handling. The included shock extension system and vehicle-specific suspension components work together to maintain proper suspension geometry while increasing wheel travel and tire clearance.

Fabtech Performance shocks deliver improved damping characteristics, enhanced vehicle stability, and greater ride comfort compared to factory shock absorbers. The result is a suspension system that performs exceptionally well on-road, off-road, and in towing applications.

Ideal for truck owners looking to run larger tires, improve off-road performance, and achieve a more aggressive stance without sacrificing ride quality.

Features:

• Provides approximately 4" of suspension lift
• Designed for 2025 GM 1500 Trail Boss and AT4 4WD models
• Includes Fabtech Performance shock absorbers
• Includes Trail Boss/AT4-specific shock extension kit
• Improves ground clearance and off-road capability
• Enhances ride quality and suspension performance
• Improves vehicle stability and handling characteristics
• Precision-valved shocks provide consistent damping control
• Allows fitment of larger wheel and tire combinations
• Maintains proper suspension geometry
• Heavy-duty construction for long-lasting durability
• Improves vehicle stance and overall appearance
• Direct bolt-on installation
• Sold as a complete suspension system
• Backed by Fabtech's limited lifetime warranty on suspension components

Kit Components:

• Fabtech 6" Lift System Component Box 1 (FTS21250)
• Fabtech 4" Trail Boss/AT4 Shock Extension Kit (FTS21264)
• Fabtech Rear Performance Shock Absorbers – Pair (FTS7240)
• Fabtech 4" Trail Boss/AT4 Component Box 2 (FTS21308)

Fitment:

• 2025 Chevrolet Silverado 1500 Trail Boss 4WD
• 2025 GMC Sierra 1500 AT4 4WD

Notes:

• Designed specifically for Trail Boss and AT4 package vehicles
• Fits 4WD models only
• Includes Performance shock absorbers and shock extension kit
• Professional installation recommended
• Alignment required after installation
• Verify wheel, tire, and backspacing requirements before purchase