Very easy is subjective. If he buys a mtb with quick release instead of thru axle, he will likely encounter rotor disc rubbing on the brake pads. He can push the wheel a bit to align or reset the bolts of the brakes calipers on the frame.typically for non foldable MTB just remove front wheel as QR very fast to remove then install again ^^ front + rear QR and disc brakes make it super easy
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