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FEATURED PRODUCT
’09-’10 Yamaha YFZ 450R EFI HP4 Kit Yamaha YFZ450R EFI
With today's modern ATV 4-Stroke engines, making additional Horsepower is no easy task...This makes it critical that Engine Tuners have the Experience, Knowledge and Equipment to do the job properly. Duncan Racing International's HP4 Valve Train Kit is designed to give you the utmost in performance and reliability... More info

LATEST NEWS
DRI's Garrin Fuller Wins ITP Quad Cross Championship
El Cajon, California’s Garrin Fuller clinched the ITP Quad Cross Motorcross Championship with a 1st overall in the Final ITP round at Glen Helen Raceway. By claiming the overall victory Fuller capped off a very successful year, Scoring 8 podium finishes and winning the Production 450 Expert Championship title with 222 points over factory Can Am rider Dylan Zimmerman who scored 204 points. Fuller’s success was in large part, due to the strong performance of his Duncan Racing prepared Honda TRX 450. …read more Read Article


 
The DRI Starting Line

Welcome and thanks for visiting Duncan Racing International for your high performance requirements.  Here at Duncan Racing we have been committed to the highest quality products, top-notch customer service and professionalism for over 30 years.

We care about our  customers and the ATV sport and are totally focused on providing you with the best products and services possible. Whether you're a racer or a recreational rider you can count on Duncan Racing for the utmost in performance, durability, selection and value.

We're known around the world for winning races. In fact, Duncan Racing is the winningest performance company in the history of the industry. We've triumphed in every single form of ATV competition: Motocross, stadium, flat track, cross country, ice racing, desert racing, and sand drags.

Services Offered:

Dyno Tuning & Testing, Complete Engine Rebuilds,
Porting 2 Stroke & 4 Stroke, Cylinder Boring,

High Performance Engine Kits 2 Stroke & 4 Stroke

You ship us your parts - We do the modifications - We ship it back to you!


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12/12/09 DRI's Garrin Fuller Wins ITP Quad Cross Championship
12/12/09 Team Christy CAPTURE SCORE and BITD ATV Championships 
8/09/09 Team DRI's Helton Wins Land's End Hill Climb- Vidmar takes 3rd
8/09/09 Team DRI's John Pitts Places 3rd OMA Round 6
7/15/09 Team DRI's Jim Vidmar Wins Pikes Peak Hill Climb
6/30/09 Helton Takes 1st & Vidmar claims 3rd at Buffalo Peaks Hill Climb
6/22/09 Bryan Hulsey Takes 2nd at OMA Wolverine XC
6/05/09 Team Christy Takes First in the SCORE Baja 500

 

Fat Boy 4 Exhausts, Fat Boy 2 Silencers, Paul Turner PIpes,PC 2000 Cylinders, PC 4000 Cylinders,
Powerheads and Pyramid Reed Valves are all proprietary products of Duncan Racing International, Inc.

                                    Duncan Racing is a proud member of the following organizations:
BBB Member since 1997 - A+ Rating

10734 Kenney Street, Suite A, Santee, California 92071
(866) 379-7223 (Toll Free Orders Only) - (619) 258-6310 (Local & International Orders)
(619) 258-6306 (Information & Tech Line) - (619) 258-6309 (Fax - 24 hr.)
Hours: Tues. through Friday 9am-5pm P.S.T
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