Changing trends create a wide range of static camber settings achieved with different length upper a‐frames. We make upper a‐frames in 1/4" increments, and you can identify them by the last four digits of the part number stamped into the round tube, although the numbers can be faint through the powder coating.
The first two numbers, "22" indicate the upper a-frame product category. The third number indicates the style:
220 = Aluminum shaft with 1/2" holes
221 = Steel Slot & Key
The fourth and fifth numbers indicate the length while the last two digits indicate the angle. See the picture for details. A part number ending in "H" indicates a steel shaft with 1/2" holes, rather than slots.
Howe Precision Max A-frames provide the same low friction as other Howe Precision products. Thanks to dual-row ball bearings, they ensure smooth movement even during intense braking or when the A-frame is damaged. The cross shafts are easily removable for tower mounts and replaceable in three different styles. The reinforced ball joint mounting ring prevents distortion of the ball joint housing.