Borla 23-24 Toyota GR Corolla ATAK Cat Back System - Carbon Fiber & Black Anodized Rear Diffuser A4 Research and Development has

A4 Research and Development has yielded an exhaust that is remarkably civil while idling / part throttle cruising

Designed for OEM injector fitment

For the sharpest look

#19621 features 3" mandrel bent main piping that passes through an 18" straight-through oval bodied muffler and NDT (No Drone Technology) tuned chamber before terminating in a high-clearance tucked tailpipe to the rear of the driver's side

Borla 23-24 Toyota GR Corolla ATAK Cat Back System - Carbon Fiber & Black Anodized Rear Diffuser A4 Research and Development hasThis 3" diameter BORLA Cat Back system is designed specifically for the 1. 6L engine in the GR Corolla. The system contains BORLA'S Polyphonic Harmonizer Technology which utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean, rich, full bodied sound and the dual mufflers deliver the aggressive ATAK sound with no drone. The system has an Active Exhaust Valve. It