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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.
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.
Diesel Tips Shirts
Show your support with a Thoroughbred Diesel t-shirt, sweatshirt, or sticker decal.
Floor Mats and Liners
Make heads turn with custom truck accessories from Thoroughbred Diesel.
Diamond Eye Performance
Thoroughbred Sku #: AFE0407DGLGBOREEXHAUST
$474.99 - $567.14
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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
High quality OE style flange and band clamps are used for a complete 360 degree
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
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