Prothane 1-1016 Greaseable Front & Rear Main Spring Eye Bushing Kit

The Prothane 1-1016 Greaseable Main Spring Eye Bushing Kit is a premium polyurethane replacement bushing kit designed for the front and rear main spring eyes on leaf spring suspension systems. Leaf spring pivot points and shackles are subjected to extreme forces during normal operation, causing OEM rubber bushings to soften, deform, and fail over time — resulting in vague handling, reduced load capacity, and increased noise.

Prothane's premium-grade polyurethane construction delivers significantly greater durability and structural rigidity than factory rubber. Unlike rubber, polyurethane resists breakdown from oils, road salt, chemicals, ozone, and atmospheric contaminants, ensuring long-lasting performance even in harsh off-road or daily-driving conditions.

Key Features:

• Greaseable design — includes greaseable bolts with built-in Zerk fittings for easy external re-lubrication without disassembly
• Complete kit — includes polyurethane bushings, precision-fabricated metal sleeves, greaseable bolts, nuts, washers, and a tube of Prothane Super Grease
• Front and rear main spring eye coverage — replaces both front and rear main eye bushings in a single kit
• Precision-fabricated sleeves — machined to exact tolerances for a direct-fit installation
• Available in red or black — choose the finish that suits your build
• Lifetime warranty — Prothane guarantees all suspension parts against defects in materials and workmanship for the life of the vehicle with the original purchaser

Apply Prothane Super Grease (included) thoroughly to each bushing during installation to ensure quiet, squeak-free operation. The greaseable bolt design allows for future maintenance without removing the suspension components. This kit is a direct upgrade over worn OEM rubber bushings, restoring proper suspension geometry, improving handling response, and maintaining your vehicle's load-carrying ability.