4 Inch Lift Kit - AT4/Trailboss - M1/M1 - Chevy/GMC 1500 (2025)

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This combined setup provides enough clearance to run 35" tires without additional modifications. We didn't want to limit you to one standard kit. Rough Country's 4-inch kit is configurable with all the shock options that we offer. This allows you to choose which shock series you want! Ranging from our nitrogen-charged N3 shocks to our Vertex reservoir shocks the power to choose is in your hands. Installation: With minor cutting and a strut compressor required to install, an estimated timeframe of 8-10 hours is recommended to complete this full installation. This full kit can be installed at home and can be completed efficiently and quickly! Limited Lifetime Replacement Warranty: Rough Country's 4" Suspension Lift Kit is backed with a limited lifetime replacement warranty towards manufacturer defects. As such, the product is protected from structural and workmanship damage after the date of purchase. With our industry-leading warranty give yourself peace of mind when using Rough Country's Suspension products!

• Lifts and levels the vehicle from front to rear.
• High clearance crossmember design for optimal suspension geometry.
• Includes cast knuckles for extreme durability.
• Retains stock track width.
• No strut disassembly required.
• 100% precision laser cut materials using the latest computer-aided design process.
• Fabricated blocks are stronger and offer a longer lifespan than cast blocks.

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Information:

Requires cutting and drilling. ONLY fits LT Trail Boss, Custom Trail Boss, and AT4 models as they are equipped with a 2-inch factory lift. Tire & Wheel Details Does NOT fit factory wheels. 20-inch or larger aftermarket wheels are required. Wheels must feature 4.5in backspacing to fit. Please test fit wheels prior to installation. Some aftermarket wheels may require 0.25" wheel spacer #1065.

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Application Summary:

Year	Make/Model
2025	Chevrolet Silverado 1500
2025	GMC Sierra
2025	GMC Sierra 1500