UH1-55 Simucube 2/VRS/Mige Hub/extension/70 PCD adapter

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UH1-55 is a direct replacement to the stock hub that comes with all three models of the Simucube 2 family of direct drive base systems and also for VRS/Mige servos with the addition of the optional drivelock accesory.

It adds 55mm extra length to the stock hub and with smaller diameter is the perfect add-on in order to extend the motor shaft and give enough room and clearense for you center monitor in order to be as low as possible and to bring it closer to the servo axle.

Total lenght 105mm from the front face of the servo.

At the same time it is compatible both with the stock Simucube 2 quick release and also with any 70 PCD quick release on the market,

Both the stock SC2 QR and the 70 PCD holes are threaded M5 so no need for ugly nuts.

The UH1-55 is also compatible with out ProXT modular extensions for those that need more than 55mm extra length.

See this great video from Greg at GTGreg on how to install the UH1-55.


If you are having problems unlocking the drive lock that holds the shaft use one of the 4 M6 bolts in one of the 2 threaded holes circled in red in the picture below, once it bottoms out half an extra turn clockwise will unlock it. We suggest to leave a 5mm gap from the servo frame when installing the UH1 to avoid rubbing.

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  • 5
    UH1-55, 55mm hub extention

    Posted by Jacob on 11th May 2021

    Gorgeous, looks even better installed on the base. In addition it's much lighter than I expected so it has next to zero effect on the FFB. Highly recommended.

  • 5
    If you are looking for a high quality hub extension for your SC2 STOP RIGHT HERE and get this unit ! straight out of the packaging it was easy to justify the very reasonable price for such a well thought out and beautifully finished product that fits

    Posted by Aaran on 27th Aug 2020

    Highly recommend this product ! beautiful finish combined with precision engineering Winning !!!