UH1-105 Simucube 2 Hub/extension/70 PCD adapter

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UH1-75 is a direct replacement to the stock hub that comes with all three models of the Simucube 2 family of direct drive base systems,

It adds 105mm 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 155mm 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 QR and the 70 PCD holes are threaded M5 so no need for ugly nuts.

The UH1-105 is also compatible with out ProXT modular extensions for those that need more than 105mm extra length.

See this great video from Greg at GTGreg on how to install the UH1-105.


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.

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  • 5
    Just take my money

    Posted by Touring Car Hunters on 5th Feb 2021

    Incredible workmanship, materials and painting, this is exactly what you need for professional simracing.