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Show your support with a Thoroughbred Diesel t-shirt, sweatshirt, or sticker decal.
Thoroughbred Sku #: AFELGBOREEXHAUST
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$371.45 - $1,006.95
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The Large Bore-HD exhaust is designed for ease of installation and engineered to perform in the most extreme environments. This system is constructed from 4" mandrel bent 409 stainless steel tubing for 29% more flow that results in increases of up to 15 horsepower and up to 31 lbs. x ft. of while lowering EGT's. Systems are available in 4" turbo-back with muffler. Large Bore-HD exhaust systems are the perfect combination of performance, fit and value.
Installation is a Snap: All systems use factory mounting locations providing stability and hassle-free installation.
Leak-Free Seal: High quality OE style flange and band clamps are used for a complete 360 degree sealing surface.
Aggressive Sound: A free-flowing 24" long muffler is used to absorb high pitch tones producing a powerful sound and unleashing all available horsepower and torque out of your rig.