APEXi N1 Evo Extreme (Valved Dual-Type Catback) - 2023+ Toyota GR Corolla MAF Hose Kit SmartBox Compatible: Optional XForce SmartBox

SmartBox Compatible: Optional XForce SmartBox (sold separately) allows automated sound control by speed

with increased NVH expected

Unlike thin OEM and cheap aftermarket gaskets that warp or blow out

including Anima ultra slim arms and dash mounts

By using a swan neck mounting style

APEXi N1 Evo Extreme (Valved Dual-Type Catback) - 2023+ Toyota GR Corolla MAF Hose Kit SmartBox Compatible: Optional XForce SmartBoxThe APEXi N1 Evolution Extreme represents the latest evolution of the iconic N1 seriesrefined for the GR Corollas G16E GTS powerplant. It emphasizes maximum exhaust efficiency through a straight through layout while integrating an internal hybrid silencer that balances performance and sound control. The result is a deep, resonant tone with minimal drone and an aggressive exhaust note when the valve opens. Key Features High Performance Design: Straight