I have purchased a vortex frame and the build quality is great although I’m finding it very hard to find info on parts, I need to know what headset cup to use for the steering bearings and what size rear sprocket and how to fit it to a qs205 motor.
Polywarm Deutschland GmbH, Office156, Hansastrasse 18, 80686 Munich, Germany
+38 066 2229636
(sales and customer support)
+49 157 56507678