Prothane 6-805-BL Rear Frame Shackle Bushing Kit - Black Polyurethane

The Prothane 6-805-BL is a premium-grade polyurethane rear frame shackle bushing kit designed as a high-performance upgrade over worn or degraded factory rubber bushings. Engineered for full-size Ford trucks, this kit restores proper leaf spring geometry and improves overall suspension response.

Factory OEM leaf spring and shackle bushings rely on soft rubber that, over time, deteriorates from road grime, UV exposure, and the constant stress of load-bearing use. Once these rubber bushings fail, the effectiveness of the leaf spring suspension is severely compromised. Prothane's polyurethane formulation resists these failure modes, delivering a longer-lasting, more durable solution at the critical shackle mounting points.

Key Features:

• Premium-grade polyurethane construction — stronger and more durable than OEM rubber
• Black color with graphite additive to aid in quiet, squeak-resistant operation
• Precision-fabricated sleeves for an accurate, factory-fit installation
• Resistant to road grime, oils, and environmental degradation
• Includes Prothane Super Grease for proper lubrication at installation
• Backed by Prothane's lifetime warranty against defects in materials and workmanship

Proper installation requires thorough lubrication of each bushing with the included Super Grease to ensure quiet, long-term operation. This kit is available in black (6-805-BL) or red (6-805) to match your preference.