Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.
Promax MA-579, Tool-Free Adjustable Angle 90° to 160°, 90mm Length, 70mm Base Height, 25.4mm Clamp Diameter, One 10mm Spacers
Sizes and geometry
1 size
Size explorer
Rider-height ranges are not published for these sizes.
Understanding sizes and measurements
Height ranges are reported by the manufacturer. A matching range is a starting point, not a guarantee of fit. Your proportions and bike setup also matter.
Reach is the horizontal distance from the bottom bracket to the top of the head tube; stack is the vertical distance.
Positive values mean more reach or stack than the reference size; zero means the same measurement. Missing values are not estimated.
SizeReported by the manufacturer
Geometry not published
The manufacturer lists these sizes without frame measurements, so there is no drawing or geometry table.