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Engine Rebuilding Process
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Engine Rebuilding FAQ
Tech Center
Instructions
Technical Documents
Rebuild Process & Shipping
Racing Team
Sponsors
Trackside Support
Apply For Sponsorship
Products
2-Stroke Engine
2-Stroke Engine
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4-Stroke Exhaust
Info & Forms
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Standard Work Order Form
Engine Work Order Form
Retail Price List
How to Ship your Quad
Credit Card Authorization
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Dealer Application Form
DRI Terms
Vortex
Vortex Warranty
Purchase Vortex
Vortex ECU Installation and Tuning Tips
Technical Documents
Who Uses Vortex
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DRI in Print
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Duncan Racing International
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Honda TRX 450R DRI 470cc National Engine Kit
$0.00
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Honda TRX 450R ('04- '05) DRI 515cc National Engine Kit
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Honda TRX 450R ('06-'16) DRI National 500/510/525cc Kit
$0.00
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Suzuki LTR 450 DRI 475cc National Engine Kit
$0.00
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Yamaha YFZ 450 DRI 450/460cc National Engine Kit
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Yamaha Raptor 700 DRI 715/727cc National Engine Kit
$0.00
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Yamaha Raptor 700 DRI 740cc National Engine Kit
$0.00
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Yamaha Raptor 250/280cc National Engine Kit
$0.00
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Honda 400EX DRI 440 National Kit
$0.00
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Yamaha Raptor 660 DRI 660cc National Engine Kit
$0.00
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Suz LTZ / Kaw KFX 400 DRI 435cc National Engine Kit
$0.00
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Suz LTZ / Kaw KFX 400 DRI 470cc National Engine Kit
$0.00
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Yamaha Warrior DRI National Engine Kit
$0.00
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Honda TRX 300EX DRI National Engine Kit
$0.00