C Beam Upgrade

In the C Beam upgrade build the builder uses a belt reduction plate allowing the Z axis motor to rum as a 2:1 belt reduction. I cant find this in the store, Is it a custom plate??

Could the C Beam with upgraded X and Z axis handle a 2.2 KW spindle?? 10lbs or so in weight. I don't know what the Bosch Colt or Dewalt weighs as a comparison.

Thanks,