NOTE: Vortex Ignitions has discontinued manufacturing their INTERCEPTOR line of piggy back fuel controllers to focus all their resources on manufacturing their standalone X10 ECU (Engine Controller Units). Regarding INTERCEPTOR references on DRI website. DRI would recommend using a Vortex X10 ECU in lieu of using the now discontinued Interceptor. Please call Duncan Racing Technical Support 619-258-6307 for more information.

For Fat Boy 4 Instructions Click Here
NEW DESIGN!

-Multi-stepped design improves acceleration and enhances ridabilty.
-Works best for serious racers and riders.
-Excellent performance with stock or modified engines.
-Recommended to be used with Vortex EFI Interceptor and Pro Flow air cleaner kit.
-Power Gains: 7+HP Gain

Limited Lifetime Warranty:
DRI offers a LIFETIME WARRANTY against defects in materials and workmanship on all Fat Boy 4 systems sold. Warranty is for original purchaser only and is non-transferable. Each system is supplied with warranty registration card that must be read, signed and returned to DRI. See Warranty Card for more details

NEW DESIGN!! -Multi stepped design improves acceleration and enhances ridability