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System Specifications
MAXIMUM DIAMETER
Purpose
The thickness of the drum friction surface is directly proportional to the drums ability to absorb and release heat during braking. As the drum becomes thinner due to normal wear and resurfacing it looses its ability to absorb and release heat and is more prone to brake fade, distortion, and cracking.
As the drum wears the inside diameter of the drum increases. The amount of drum thickness lost to wear is equal to 1/2 the increase in diameter.
Inside Diameter 10 in.
Bore Limit (Maximum) 10.03 in.
Maximum Runout 0.007 in.