1.5″ Sport System W/ DL 2.5 Resi & 2.25 N/R Shocks

Features:

• 1.5" front and rear suspension lift
• Includes 2.5" Dirt Logic front coilovers
• 2.25" Dirt Logic rear shocks included
• Improves ground clearance and stance
• Heavy-duty upper control arms included
• Extended travel ball joints reduce suspension bind
• Optimized ride tuning for on and off-road
• Allows fitment of taller aftermarket tires
• Factory ride can be restored if needed
• Engineered for gas V8 models only
• Made in the USA with premium materials
• All hardware included for easy installation

Bring Out The Full Potential Of Your Trail Boss

If you're ready to give your 2025 Trail Boss or AT4 a serious performance edge without diving into a full lift kit, the Fabtech K1223DL 1.5" Sport System is exactly what you need. This setup gives you just the right amount of lift to clear taller tires, sharpen up your stance, and take on tougher terrain with confidence. What really sets this kit apart is the inclusion of Fabtech’s Dirt Logic shocks, 2.5-inch coilovers up front and 2.25-inch rear shocks, designed to soak up bumps and smooth out the ride whether you're cruising pavement or tearing through backroads. It doesn’t just look good, it performs even better thanks to premium components that improve suspension travel and control without compromising ride quality. The added clearance not only improves off-road capability but also lets your truck breathe easier with more tire room and less rub. This system is built with long-term durability in mind, and every part is engineered to match the natural ride feel of your V8 gas truck. If you’re looking to take your factory setup to the next level, this is the kind of upgrade that makes a difference every time you drive.

Tuned Suspension Geometry Meets Trail Ready Control

The Fabtech K1223DL system is engineered to raise your 2025 Chevy Trail Boss or GMC AT4 1500 by 1.5 inches while preserving factory geometry and optimizing suspension performance. Up front, the system replaces the stock setup with 2.5-inch Dirt Logic coilovers featuring external reservoirs for increased cooling and control under hard use. These coilovers are tuned specifically for the weight and balance of the GM 1500 platform, providing a noticeable improvement in response and ride feel. At the rear, Fabtech includes matching 2.25-inch Dirt Logic monotube shocks for consistent damping, paired with 1.5-inch lift blocks and new U-bolts to level the stance. Extended travel upper control arms come equipped with heavy-duty ball joints, allowing for smooth articulation without binding at full droop. This kit is designed exclusively for gas V8 models and will not fit trucks with Super Cruise, adaptive ride control, or standard cab configurations. OEM wheels and tires cannot be reused, so aftermarket fitment is required to take full advantage of the upgraded clearance. With premium components, precise tuning, and no cutting or welding needed, this system delivers real-world performance that holds up under pressure.

Fitment: 2025 GMC AT4/Chevrolet Trail Boss 1500

Notes:

• Fits 2025 GMC AT4 and Chevy Trail Boss 1500
• Designed for V8 gas engine models only
• Does not fit trucks equipped with Super Cruise
• Will not fit models with adaptive ride control
• Not compatible with standard cab configurations
• OEM wheels and tires cannot be reused
• Requires aftermarket wheels with proper offset
• Includes round style U-bolts, verify your application
• System raises vehicle by 1.5 inches front and rear
• Includes Dirt Logic 2.5 coilovers and 2.25 rear shocks
• Professional alignment recommended after installation
• Factory suspension can be restored if needed