All of the 10x1.75" brake hardware can be used on the the 10x2.5" brakes. Some of the brake spreader bars from the 10x2.5" brakes can't be used on 10x1.75" brakes, but all the stuff used on the 10x1.75" brakes can be used on the 10x2.5" brakes.
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I did some mixing and matching to confirm all of this, there's more pictures and info posted here
E-Brake help please
