05-10 LX Platform Rear Control Arm Bushing

The PROTHANE 05-10 LX Platform Rear Control Arm Bushing (part number 4-220-BL) is a polyurethane replacement bushing engineered for the Chrysler 300C, Dodge Challenger, and Dodge Charger model years 2008–2014. This rear trailing arm bushing upgrade addresses the compliance issues inherent in stock rubber components, offering measurable improvements in suspension response and steering feel during both highway and aggressive driving conditions.

Polyurethane bushings operate across a wider durometer range than factory rubber, resisting permanent deformation under sustained load and temperature cycling. This material choice reduces bushing deflection under cornering forces and braking loads—critical for vehicles subject to sustained lateral stress or towing duty. The black finish matches factory appearance while providing UV and ozone resistance. Installation requires no modifications to mounting points or suspension geometry, making this a direct replacement solution. Proper bushing maintenance extends suspension component lifespan by reducing excessive movement that accelerates wear on control arm ball joints and tie rod ends.

This bushing kit is suited for owners of fifth-generation Chargers, Challengers, and full-size 300C models seeking to improve suspension control and reduce slop in the rear trailing arm assembly. Vehicle operators running track days, towing regularly, or managing high-mileage duty benefit most from polyurethane upgrades, where the reduced compliance translates directly to more predictable suspension geometry throughout the suspension travel envelope.

PROTHANE polyurethane bushings are OE-equivalent in fitment and carry no warranty restrictions for street or off-road use on compatible Mopar platforms. This product represents a popular upgrade category for Dodge and Chrysler RWD chassis, widely installed by suspension specialists and enthusiasts seeking to restore compliance lost in aging factory rubber components.