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KW V4: The KW V4 was developed exclusively for supercars
Our unique design overcomes the limits set by the stock exhaust
except 8cyl
2014-2020 BMW 4 series (F33) 435i
Borla XR-1 Racing Sportsman 3.5in. Outlet / 3.5in Inlet Oval Muffler - 5in Diameter x 15in Length Chevrolet-Silverado-1500-1999 KW V4: The KW V4High quality austenitic stainless steel. Patented, race winning XR 1 Raceline technology. 3 options: Offset Made with the same patented, flow through design as the XR 1 Sportsman oval. The inlet outlet are offset to the same side of the muffler, to accommodate transmission and frame rail interference on some applications Oval BORLAs #1 selling racing muffler. Satisfies the needs of most racing applications because it is the lightest, most compact, and
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