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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These are the parts that we had anodized in the previous entry. Just got them back from LASER.

The 1GR 65mm to 76mm throttle valve adapters are BACK IN STOCK.

We will have all the back orders shipped out TODAY!!
... See More

2 days ago

URD Spec-U Exhaust for the 2003-2009 4Runner V6 now shipping!!

urdusa.com/Exhaust-&-Headers-URD-Exhaust-Components/c93_104/p1260519364/URD-Spec-U-Exhaust-System...

This is a combination Equal Length Y pipe and Cat-Back system made from 304 grade stainless steel, all mandrel bent and had Tig welded.

It sounds AMAZING!!!!
... See More

1 month ago

URD Spec-U Exhaust for the 2005 and later Tacoma V6 ready for shipping!!!!

urdusa.com/store/product_info.php?cPath=93_104&products_id=1260519362

This is a combination Equal Length Y pipe and Cat-Back system made from 304 grade stainless steel, all mandrel bent and had Tig welded.

It sounds AMAZING!!!!
... See More

2 months ago

Underdog Racing Development LLC "URD" updated their cover photo. ... See More

2 months 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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Underdog Racing Development