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At Mtroniks we pride ourselves on our build quality and service. All speed controllers go through an extensive testing procedure during production.
To be 100% sure that we are always delivering the highest quality speed controllers to our customers we remove and test a random number of finished, packaged speed controllers from each production run. Since these speed controllers need removing for their retail packaging to complete these tests we cannot repackage them and put them back into stock as new so we offer them, here, on our ex-demo page at a discount.
We cannot guarantee that every type of speed controller will be available on here all the time so please check back at a later date if what you hoped to find on here is not available.