Carli Suspension CS-DUBK-19-425 Rear U-Bolt Kit for 2019-24 Ram 3500 4WD 4.25"

Vehicle Fitment

• 2019-2024 Ram 3500 4WD (4.25" rear axle tube) - compatible with lifted or upgraded suspension systems

Features

• High-strength rear U-bolt set engineered specifically for trucks with 4.25" rear axle tube applications
• Designed for heavy duty, lifted rear suspensions to maintain clamp force and alignment under load
• Includes properly sized bolts, nuts and washers for direct replacement of factory hardware
• Constructed from high tensile steel for durability in demanding off-road and towing environments
• Ensures proper axle to leaf pack clamp, reducing premature wear and maintaining ride quality
• Ideal upgrade when installing aftermarket leaf springs or lift blocks in lifted Ram 3500 trucks
• Corrosion-resistant finish to withstand harsh conditions and exposure to road salts, mud and water
• Direct replacement fitment - retains all factory geometry when installed correctly with matching components

Specifications

• Manufacturer: Carli Suspension
• Part Number: CS-DUBK-19-425
• Fitment: 2019-2024 Ram 3500 4WD with 4.25" rear axle tube (coverage for 2025 unconfirmed)
• Axle Tube Size: 4.25" (approx. 108 mm) rear axle tube diameter
• Included Hardware: U-bolts, high grade nuts & washers (quantity as supplied by manufacturer)
• Construction: High-tensile steel U-bolt kit with corrosion-resistant coating
• Exclusions: Not confirmed for axle tube sizes other than 4.25"; verify before purchasing

Included Components

• 4x Rear axle U-bolts sized for 4.25" axle tube (CS-DUBK-19-425)
• 8x High grade nuts & washers compatible with supplied U-bolts

Product Description

The Carli Suspension CS-DUBK-19-425 is a precision-engineered rear axle U-bolt kit designed for 2019-2024 Ram 3500 4WD trucks equipped with a 4.25" rear axle tube. When upgrading to higher load capacity or lifted suspension systems, the factory U-bolts and hardware may not provide sufficient clamp force or durability. This kit addresses that need with a robust high-tensile hardware solution crafted for heavy duty use.

Whether you're installing upgraded leaf springs, blocks, or building an overland rig, the CS-DUBK-19-425 ensures the rear axle remains securely clamped to the leaf pack, preserving alignment, reducing sagging, and maintaining ride quality under load. With a corrosion-resistant finish and direct-fit design, it offers a durable and installation-friendly upgrade for serious truck owners.

This kit is ideal for Ram 3500 4WD owners who haul heavy loads, tow large trailers or navigate off-road terrain, and require a dependable rear axle hardware solution. Fitment is confirmed for model years 2019 through 2024; coverage for 2025 is unconfirmed at the time of this listing. Be sure to verify your axle tube size and overall suspension configuration before purchase.