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Thoroughbred Diesel has been your online performance headquarters since 2002. We know how to get the most performance out of your pickup truck and offer all of today's most popular diesel performance products.
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Thoroughbred Diesel offers OEM and diesel stock parts for your diesel pickup truck. At Thoroughbred Diesel, you can buy stock diesel replacement parts such as injectors, fuel pumps, ball joints, track bars, turbos, and more for your diesel truck.
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Make heads turn with custom truck accessories from Thoroughbred Diesel.
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Thoroughbred Sku #: AFE0107GMLGBOREEXHAUST
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.