SuperPro Rear Upper Forward Diff Pinion Mount Bush Set

2011–2021 Chrysler 300, 2015–2023 Dodge Challenger / Charger

Part #: SPF5191K

Overview

The SuperPro Rear Upper Forward Differential Pinion Mount Bush Set is a precision-engineered upgrade designed to enhance the rear differential stability of Chrysler 300, Dodge Challenger, and Dodge Charger models spanning 2011 to 2023. This kit addresses the common issue of premature wear found in factory rubber bushings, especially under the increased loads experienced by high-performance variants such as the SRT and Hellcat.

By replacing the original mounts with durable polyurethane bushings, this kit improves rear traction, reduces drivetrain noise and vibrations, and extends the service life of your vehicle’s differential components. It is an ideal solution for enthusiasts seeking improved handling and durability, as well as daily drivers who want a quieter, more refined ride without sacrificing comfort.

Key Features

SuperPro’s Rear Differential Pinion Mount Bush Set delivers a range of benefits that make it a superior choice over standard rubber mounts:

• Enhances vehicle handling and rear traction by stabilizing the differential mount
• Manufactured from proprietary engineering-grade polyurethane for exceptional durability
• Resistant to extreme temperatures, oils, water, and coolant exposure
• Reduces noise, vibration, and harshness (NVH) transmitted to the cabin
• Significantly extends bushing service life compared to factory rubber components
• Precision-engineered for the forward mounting points on the rear differential
• Backed by a lifetime warranty for long-term peace of mind
• Designed, engineered, and manufactured in Australia to exacting standards

Construction & Design

This bush set features SuperPro’s proprietary polyurethane compound, which strikes an optimal balance between stiffness and compliance. Unlike traditional rubber bushings that degrade quickly when exposed to heat, oils, and chemicals, these polyurethane mounts maintain their shape and performance over time. Their resistance to environmental contaminants ensures longevity even in demanding driving conditions.

The design focuses on controlling differential movement under load, providing a firmer yet refined connection between the differential and chassis. This reduces unwanted movement that can lead to drivetrain wear and compromised handling.

Performance & Sound

By stabilizing the rear differential, the SuperPro pinion mount bush set improves traction and handling responsiveness, particularly during acceleration and cornering maneuvers. The reduction in differential movement also minimizes unwanted noise and vibrations, resulting in a quieter and more comfortable cabin environment. This upgrade is especially beneficial for high-performance models where differential stress is significantly increased.

Installation & Fitment

The kit is a direct-fit replacement for the rear differential pinion mount bushings on 2011–2021 Chrysler 300, 2015–2023 Dodge Challenger, and 2015–2023 Dodge Charger models, including RT trims. Installation requires standard mechanical tools and moderate automotive knowledge. No modifications to the vehicle’s chassis or differential are necessary, making it a straightforward upgrade for professional installers and experienced enthusiasts alike.

What's Included

• 2 x Rear Differential Pinion Mount Bushings
• Installation instructions

Ideal For

This bush set is perfect for owners of Chrysler 300, Dodge Challenger, and Dodge Charger models who want to improve rear-end stability, reduce drivetrain noise, and extend the lifespan of their differential mounts. It is especially recommended for high-performance variants such as the SRT and Hellcat, as well as for drivers who demand enhanced handling and durability from their vehicles.

SuperPro is an Australian suspension specialist known for high-performance polyurethane bushings, control arms, and sway bar components designed for both 4x4 and performance vehicles. Their parts are built to sharpen handling and improve durability compared with worn factory rubber, making them a common upgrade for enthusiasts chasing tighter response and longer-lasting suspension control.