The choice of material directly impacts durability, fitment, and price. Polypropylene (PP) is the industry standard for high-quality aftermarket bumpers because it is flexible, impact-resistant, and offers an OEM-like fit. ABS Plastic is more rigid and cost-effective but can be brittle under extreme stress. For high-performance or luxury builds, Carbon Fiber (2x2 Twill) is preferred for its superior strength-to-weight ratio and aesthetic appeal, though it requires a UV-resistant clear coat to prevent yellowing over time.