Description
The Borla S-Type Axle-Back Exhaust System, part number 11924CFBA (Summit Racing part number BOR-11924CFBA; UPC 808422924016), is designed for models equipped with NPP Dual Mode Exhaust. It includes functioning NPP valves and is configured for a split-rear exit with dual inlets and four outlets.
The system is constructed from natural-finish 304 stainless steel and includes two turbo-style mufflers, each with a single inlet and dual outlets. The intermediate pipe diameter is 2.75 inches, and the tailpipes measure 2.50 inches in diameter. Hardware is included.
Four round, slant-cut carbon fiber tips are included. Each tip has a 4.00-inch outlet, a single-wall, non-rolled edge, and a black anodized center. The tips provide the system’s four-outlet appearance.
- System type: Rear axle-back; sold as a kit
- Material: 304 stainless steel; natural system and muffler finish
- Exhaust layout: Dual in/four out, split rear exit
- Mufflers: Two turbo mufflers, single inlet/dual outlet
- Included: NPP valves, hardware, and four carbon fiber tips
- Catalytic converters: Not included
- Condition: Not remanufactured
Borla describes its exhaust systems as using straight-through and multi-core technology, mandrel-bent tubing, and computer-controlled CNC manufacturing. The manufacturer states these design features are intended to support exhaust flow and fit; specific power gains are not provided for this system.
Important: It is illegal to install parts or components that bypass, defeat, or render inoperative manufacturer technology or design required to reduce vehicle emissions under state and federal Clean Air Act standards. Verify that this system is appropriate for your vehicle and intended use.
Fitment and ordering notes
- Confirm the exact model, part number, configuration, dimensions, and application against the information shown in this listing.
- Review the product images and listed attributes before ordering; fitment can vary by vehicle, equipment, year, and installation setup.
- Contact X Factor Motorsport for availability, fitment, product questions, or freight guidance before purchase.
