Dakota Digital SIM-1A Speedometer Speedo Calibrator Recalibration Module Harley

Designer: Dakota Digital

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Fitmet Questions? Call us at 610-754-8500



PART # SIM-1A or 2210-0391

The SIM-1A electric speed correction module will plug into newer speed sensor harnesses to correct the speedometer and odometer after a change in tire size, pulley size or transmission gearing. 

The unit plugs directly between the stock Harley transmission sensor and the original speedometer and is easily tucked away into the bike's wiring harness after adjustment is complete.

With factory Harley connectors, no cutting or splicing is required.

Two push button switches allow the original speedometer reading to be increased or decreased easily.

Ability to correct the speed to within 1 MPH or KPH from 50% to 284% of the original reading.

Sealed completely from water, dust, and dirt.

The new SIM-1A comes in a smaller size for easier mounting and allows more correction for calibrating more bikes.


Harley Davidson models:

1995-2003 Sportser Models

1996-2006 Softail Models

1996-2005 Dyna Models

2006 and earlier Touring models with Factory Electronic Speedometer