Description
The Dinan Free Flow Stainless Exhaust System, part number D660-0075-BLK (Summit Racing part number DNN-660-0075-BLK; UPC 813725024660), is a rear axle-back system with a split-rear exit. Dinan describes its free-flow systems as precision-engineered for power gains and a sporty, appropriately aggressive sound at wide-open throttle, while avoiding the irritating low-rpm drone common to many aftermarket mufflers.
Constructed from 304 stainless steel, the system is designed for corrosion resistance and is described by Dinan as reducing weight by 30 percent compared with the original system. It uses OE brackets and hangers for factory-style mounting. Confirm the correct vehicle application before ordering; no specific vehicle fitment is identified in the supplied product details.
- Configuration: Dual in/four out; two inlets and one included chambered muffler with dual inlets and dual outlets
- Pipe diameter: 2.75-inch intermediate pipes and 2.75-inch tailpipes
- Tips: Four included 4.00-inch round tips, finished in black; 304 stainless steel with straight cuts and beveled, double-wall edges
- Finish and contents: Natural-finish system and muffler; mounting hardware included; catalytic converters not included
- Condition and quantity: Not remanufactured; sold as a kit
Emissions notice: It is illegal to install parts or components that bypass, defeat, or render inoperative manufacturer technology and design required to reduce vehicle emissions under state and federal Clean Air Act standards.
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.
