4-Bar Bushing Set 1-1/8in.

The 4-Bar Bushing Set 1-1/8in. from Energy Suspension is a critical suspension component designed for vehicles that have been upgraded with performance 4-bar link systems. This polyurethane bushing kit replaces worn or stock rubber bushings that connect the suspension links to the frame, eliminating play and delivering more responsive steering geometry. Whether you're building a drag-focused platform or fine-tuning a street machine, quality bushings are non-negotiable for translating driver input into predictable handling.

This bushing set features Energy Suspension's Hyper-Flex polyurethane construction, a material choice that outperforms factory rubber in both durability and response rate. The 1-1/8 inch outer diameter flanged bushing design seats securely in standard mounting locations, while the 1.75-inch length and 0.625-inch ID sleeve accommodate typical 4-bar link bolt diameters. Polyurethane resists oil degradation and maintains its rigidity across temperature swings, where rubber naturally softens—a critical advantage in high-performance applications. The cadmium-plated steel sleeves resist corrosion and provide a durable bearing surface against the bushing material.

Mechanics and suspension tuners install this kit on vehicles equipped with 4-bar link suspension geometry—common on muscle cars, drag racers, and modified street machines where frame-mounted links control rear axle movement. Installation involves removing factory bushings, sliding the new polyurethane set onto existing bolts, and torquing to manufacturer spec; no modifications or additional hardware required. The kit's black finish resists UV fade and blends seamlessly into most suspension builds. Verify that your 4-bar system uses 1-1/8 inch bushing holes before ordering to ensure compatibility.