Rear Spring Bushings

The Energy Suspension Rear Spring Bushings (part number 4.2134R) are polyurethane leaf spring bushings engineered to replace worn OEM rubber components on Ford and Mazda compact trucks from the mid-1980s through late 1990s. This is a complete rear spring bushing kit designed to restore suspension geometry and handling while eliminating the compliance that develops in aging factory rubber.

Energy Suspension's Hyper-Flex polyurethane compound resists temperature-induced deterioration and maintains consistent bushing stiffness across the suspension's operating range. The red polyurethane paired with cadmium-plated steel hardware ensures chemical resistance and longevity in varied climates. Polyurethane bushings are stiffer than factory rubber, which sharpens the truck's response to steering input and reduces unwanted vertical play at the rear axle during acceleration or braking. The material tolerates mud, salt, and ozone exposure better than deteriorating rubber, making them suitable for trucks exposed to harsh environments or active use.

This kit targets compact truck owners experiencing rear-end clunking, wallowing during cornering, or visible cracks in leaf spring bushings—common wear items on first-generation Ford Rangers and Mazda B-Series trucks that logged high miles. Owners performing suspension restoration, upgrading ride quality, or addressing suspension noise will find this kit a direct replacement that improves handling without requiring frame modification. The inclusion of all necessary hardware makes installation straightforward for anyone with basic mechanical skills and access to a press or bearing puller.