CIRO Rear Signal Light Inserts - Black - Red Lens 45421

Factory signal lenses often yellow, crack, or scatter light inefficiently—leaving your brake and turn signals unreliable and harder for other drivers to see. CIRO's optically engineered polycarbonate lenses restore crisp, focused light output while adding a sleek black housing and red lens that complements modern custom builds. Whether you're upgrading for visibility, aesthetics, or both, this bolt-on replacement delivers DOT-compliant performance without rewiring or fabrication.

• Fits bullet-style turn signals
• Uses 1157 bulb
• Optical-grade polycarbonate lens
• Engineered optics for maximum light transfer
• Black housing with red lens
• Plug-and-play installation
• DOT compliant
• Load equalizer may be required (models pre-2013)
• No professional fabrication needed