Prothane 6-601-BL Black Polyurethane Axle Pivot Bushing Kit for Ford Twin I-Beam

The Prothane 6-601-BL is a black polyurethane axle pivot bushing kit engineered as a direct, high-performance replacement for worn factory rubber bushings on Ford trucks and SUVs with the Twin Traction Beam (TTB) front suspension system.

On Ford pickups and Broncos equipped with the twin I-beam front axle layout, each I-beam connects to the vehicle frame via an axle pivot bushing. This bushing allows the beam to articulate vertically through its full range of motion. Over time — especially under the stress of off-road use, heavy loads, or simply high mileage — the OEM rubber bushings compress, hollow out, and fail, leading to loose front-end feel, suspension noise, uneven tire wear, and compromised wheel alignment.

Key Features:

• Made from Prothane's specially formulated polyurethane compound — significantly more durable than OEM rubber
• Black color with a small amount of graphite blended in, which helps reduce squeaking
• Designed to work with your existing OEM outer sleeves/shells — no shell replacement required
• Includes Prothane's high-viscosity polyurethane grease — apply at installation to prevent noise
• Precision-dimensioned for a snug, accurate fit in the OEM pivot location
• Suitable for both daily street driving and off-road use
• Lifetime warranty to the original purchaser against defects in materials and workmanship

Restoring worn axle pivot bushings brings the twin I-beams back into proper alignment with the frame, eliminating slop and noise while improving steering response and tire wear. Installation is straightforward with a standard ball joint press. Be sure to apply the included grease thoroughly during installation for optimal performance and longevity.