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Services Engine Rebuilding Process Engine Rebuilding 2-Stroke Porting 4-STK Cylinder Head Center Custom ATV Builds Machine Shop Services Engine Work Order Form Shipping Tips Engine Rebuilding FAQ Tech Center Instructions Technical Documents Rebuild Process & Shipping Racing Team Sponsors Trackside Support Apply For Sponsorship Info & Forms Shipping Tips Standard Work Order Form Engine Work Order Form Retail Price List How to Ship your Quad Credit Card Authorization Fat Boy 4 Warranty Dealer Application Form DRI Terms Vortex Vortex Warranty Purchase Vortex Vortex ECU Installation and Tuning Tips Technical Documents Who Uses Vortex About History Photos DRI in Print Contact Us

Duncan Racing International

4-Stroke Exhaust

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Category

All
Fat Boy 4 4-Stroke Accessories
Fat Boy 4 4-Stroke Power Exhaust
Fat Boy 4 Replacement Parts & Tools

Custom Colors for Fat Boy 4 Exhaust Systems

from $24.95

Fat Boy 4 Turndown

$59.95

Fat Boy 4QP-2 Quiet Tip

$129.95

Hours of Operation:

Tuesday-Friday 8:00am -5:00pm PST

*Closed Sat, Sun, Mon

*Available by Appointment After Hours - Call to Schedule!

Duncan Racing International, Inc

9380 Bond Ave Suite B, El Cajon, CA 92021

Phone: 619-258-6306 | Fax: 619-258-6309

sales@duncanracing.com

Duncan Racing International, Inc

9380 Bond Avenue Suite B,

El Cajon, CA, 92021,

United States

619-258-6306 sales@duncanracing.com

Hours

Tue 8am - 5pm

Wed 8am - 5pm

Thu 8am - 5pm

Fri 8am - 5pm

© Duncan Racing International, Inc. 2024 | All Rights Reserved.