USB/Serial Port Adapter ONLY for ThunderMax® modules #309-340, 309-385, 309-311(for computers without a serial port; compatible with serial port communication cables)

If your laptop or PC does not have a serial port, this inexpensive adapter will instantly add a serial port to your computer for communicating between ThunderMax® EFI modules and models listed below. Supports 1.0 and 2.0 USB ports, Windows 98/2000/ME/XP/Vista/7. Includes driver installation software.

1995-2007 Touring Models
2001-2010 Softail® Models
2004-2011 Dyna® Models
2007-2013 Sportster® XL/XR Models
2002-2013 V-Rod® Models

Weight 1 lbs
Emissions Compliant

Fuel / Air


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