Welcome to your Stealth GPS Upgrade page.

If you own a Stealth GPS-3X or GPS-4
you can activate the following packages:

  • Upgrade from Lite version to Full version: activates Data Acquisition and Track Mapping full features, as well as the possibility to dialogue with RID optional expansion modules.

  • Inertial Pack: the calculation and indication functions of the lean angle and Lateral and Longitudinal accelerations in G are activated.
    DigiraceMMX analysis software will also show the acceleration and lean angle charts.

The system calculates the lean angle relative to the axis (B) passing through the center
of gravity of the motorcycle + rider, considering also the rider position.

The lean angle is calculated by a high precision algorithm developed by Starlane
and does not require the installation of sensors on the vehicle.
Unlike other systems, it also allows correct angle alignment
and acceleration with the instantaneous position on the circuit.

You can see the lean angle degrees on the specific screen page which indicates
the current angle and the maximum degrees reached in the last right and left corners.

Packages can also be activated separately
and have the following prices:

  • Upgrade to Full Version*: Euro 105 + VAT (128,1 VAT included)

  • Inertial pack: Euro 49 + VAT (59,78 VAT included)

* If you have a Stealth GPS-3X or GPS-4 not in Lite version,
or your Lite has already been brought to full version
(indicated as Lite + in the System Info menu of the device), only the Inertial Pack will be enabled.


On all Stealth GPS-4 and GPS-4 Lite you can activate the Inertial Pack
while only the latest generation of Stealth GPS-3X and 3X Lite can be activated.
you can select the packages you want to activate.

Al termine della procedura riportata di seguito è poi possibile
selezionare i pacchetti che si desidera attivare.

Payment is made on PayPal secure platform.
If you do not have a personal PayPal account,
the procedure accepts secure transactions even with normal Credit Cards.

The following instructions can be downloaded and printed from this link: Download Instructions


In order to activate the Inertial pack you must check in the System Info menu
that your Stealth has version 4.16 or later Firmware,
it is still recommended to keep it updated to the latest firmware version available at the following link:


Before proceeding it is advisable to download, through the DigiRaceMMX software,
the existing sessions that you would like to keep.

Your Stealth GPS has the following screen at startup:

and the "System Info" displays STEALTH_GPS LITE as name

Power on your Stealth and enter the "System Upgrade" menu

At the following screen insert the USB pendrive

The system will automatically generate an activation file with extesion .SAF (eg:12341234.SAF)
on the pendrive, which name is related to the device serial number

Such an operation is confirmed by the following screen:

Remove the USB pendrive and insert it into the PC socket

Select the activation file .SAF in the pendrive and press SEND

Request Information