SteyrTek adapter
 

• Thickness: 2 inches = 51 mm

• Bolt pattern: 6 x 139.7 / 6 x 139.7

• Center hole diameter: 110 mm

• Outer diameter: 176 mm

• The package contains 1 piece

Use a hub centric ring to ensure that the adapter is properly centered on the car. Choose a hub centric ring that has the same outer diameter as the inner diameter of the adapter (110 mm) and the same inner diameter as the diameter of your car's axle

https://www.tyrelia.com/wheel-accessories-hub-centric-rings-c-90_161.html

With this adapter, you can reduce the offset in a car with a 6 x 139.7 bolt pattern by shifting the wheel outwards by 50.8 mm. The bolt pattern stays the same. The stud bolts and nuts (thread pitch: 1.5 mm, thread diameter: 12 mm) for mounting the wheel on the adapter are included in the delivery.

This fine SteyrTek adapter is made of high-quality aluminium. For racing only.