RCI Offroad Catalytic Converter Guard | Toyota 4Runner (2003-2023)

The RCI Offroad Catalytic Converter Guard protects the exposed catalytic converters on 2003–2023 Toyota 4Runner, FJ Cruiser, and GX models from trail debris and off-road contact. Built from 1/4″ CNC laser-cut aluminum, this guard secures your undercarriage and adds a practical layer of theft deterrent when paired with an RCI transmission skid plate.

Underbody Protection That Integrates Seamlessly

Catalytic converter damage is expensive to repair and theft is a real risk. This RCI guard addresses both concerns with a vented aluminum design that ties directly into RCI's modular skid-plate system and works with the OEM Toyota TRD PRO engine skid plate for full-coverage protection.

• Material & Construction: CNC laser-cut 1/4″ aluminum—rigid enough to deflect rocks and roots without adding excessive weight.
• Vented Design: Airflow channels dissipate exhaust heat and prevent thermal buildup, preserving catalytic converter longevity under high-demand use.
• System Integration: Designed to pair with RCI Transmission and Transfer Case skid plates for continuous underbody coverage front to rear.
• Theft Prevention: Physical barrier deters catalytic converter theft when layered with other RCI guards—a practical security upgrade for parked vehicles.
• Custom Fit: Laser-cut tolerances ensure a flat, finished surface across all supported generations—4th, 5th, and 6th-gen 4Runner, FJ Cruiser, and GX.

Fitment: 2003–2023 Toyota 4Runner, FJ Cruiser, and GX

This guard fits all 4Runner generations from 2003 to present, FJ Cruiser (2007–2014), and Lexus GX models in the same window. It is compatible with all cab and body configurations. Use the fitment verifier above to confirm compatibility with your exact configuration.

About RCI Offroad

RCI Metalworks manufactures skid plates and underbody protection specifically engineered for Toyota truck and Lexus SUV platforms. Their CNC-cut aluminum guards are designed to integrate as a modular system, offering redundant protection for transmission, transfer case, and emissions components without the weight penalty of steel.