51128746978 Lower Trim | Rear Bumper Reinforcement Assembly

The 51128746978 Lower Trim delivers essential aerodynamic refinement and structural protection for the rear bumper assembly on 2019+ BMW 5 Series G38 LCI M models. This precision-engineered trim component integrates seamlessly with factory mounting points to enhance the vehicle's rear aesthetics while providing critical protection against road debris impact. Manufactured using automotive-grade polymer composites with UV-resistant formulation, the trim maintains dimensional stability and color consistency throughout extreme temperature variations and environmental exposure. The textured matte black surface finish precisely matches OEM specifications to preserve the BMW's sophisticated rear appearance profile.

Injection molding technology ensures uniform thickness and contour accuracy across production batches for perfect alignment with G38 LCI M bumper contours. Integrated mounting clips feature vibration-dampening properties that eliminate operational noise while maintaining secure positioning at highway speeds. The trim's impact-absorbing design protects sensitive bumper components from stone chips, road debris, and minor abrasions while resisting deformation under thermal stress. Installation requires no modification to factory components and maintains full functionality of parking sensors and rear lighting systems. Optimized for M Sport package configurations, this lower trim preserves the vehicle's aerodynamic efficiency while providing a durable protective barrier for the bumper's most vulnerable section against environmental contaminants and daily wear.

Engineering Specifications