This article is from the Toyota Tundra FAQ, by Steve Yee with numerous contributions by others.
TRD stands for Toyota Racing Development. They are a semi-independent design,
engineering, production, and marketing arm of Toyota. Working hand in hand
with Toyota Motorsports, TRD produces and distributes parts that can be added
to your Toyota vehicle that increases the performance, handling, looks, etc of
any Toyota vehicle.
Many vehicles, the Tundra included, come from the Toyota factory or distributor
port with some of these TRD Parts installed.
There are three offshoots of TRD. One is L-Tuned, a specific arm of TRD that
handles nothing but Lexus modifications. Lexus is the luxury arm of Toyota
Motor Corporation. The other is Kazuma, which is the professional racing parts
distribution arm of TRD. The third is TRD Sport Parts, which is the "common"
TRD Parts distribution arm.
One big side benefit to TRD parts is that if you purchase TRD parts and have a
dealer install them, the parts will be covered under the balance of your
You can reach TRD at www.trdusa.com. Kazuma can be found at
www.kazumaparts.com. TRD Sport Parts can be found at www.trdsportparts.com.
L-Tuned can be found at www.l-tuned.com.