Underdog Racing Development is a performance parts supplier, manufacturer and development company specializing in Toyotas


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  • URD Spec-U Exhaust Release

    URD is proud to announce our new Spec-U exhaust system for the 2005-2013 Tacoma V6 and 2003-2009 4Runner. This is the ultimate performance exhaust system for your truck and it is ready for the race track. The Spec-U system enhances power and torque throughout the RPM range and has a completely unique exhaust note.

    Hear it on this product video
  • 2TR-FE Supercharger Kit

    URD has released this advanced supercharger system for the 2005 and later Tacoma with the 2.7L 2TR-FE 4 cylinder engine. The before dyno using a DynoJet chassis dyno was 117 RWHP. The after dyno was 248 RWHP. The after dyno was done without the catalytic converters installed and the Stage 2 pulley.

    Check out the dyno chart & video
  • Spec-U Equal Length Headers

    URD is proud to announce our new Spec-U True Equal Length Long Tube Header for the 1GR-FE 4.0L V6 engine. We have tested different tube lengths in an effort to maximize the low end torque production without sacrificing the upper end power gains. The equal length design also improves the sound or tone of the exhaust.

    Read the reviews

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Magnuson Supercharger kits are now available for the FlexFuel Tundra 5.7L.

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3 days ago

URD PnP MAF Sensor Calibrator

Is back in stock!!! The first batch blew out the doors way faster than we expected. Second batch ready to go!

The easiest way to get U-Tuned!!!

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1 week ago

URD Performance Y Pipe for the 2016+ Tacoma 3.5L V6 NOW SHIPPING!!!

Includes an extra O2 sensor port for people that want to install a wideband AFR Gauge and Sensor.

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1 week ago

URD Performance Cat-Back systems for the 2016+ Tacoma 3.5L V6 now shipping!!!

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2 weeks ago

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Tuning has never been easier.

UCON-EMS Advanced Engine Management for Toyota 1GR-FE 4.0L V6

Tap into your engine's potential
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URD is all about being active in the gearhead community. We are an active vendor on nine internet automotive forums. We utilize those websites to answer customer inquiries and source new product development ideas from real-world enthusiasts. You'll also see us at quite a few annual events, getting dirty and causing trouble. (maybe just a little)

See all the forums we support

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Underdog Racing Development