You have to trade it while your Rydon is holding a Protecter item. Trade it to your friend and then trade it back to yourself and you now have a Ryperior.
You can get Rydon to evolve by trading it with a protecter.
No
it evolve at lv42
give it poo
Give it a Protector and trade it and it will evolve into Rhyperior.
you can evolve rydon by trading with the protctor
Rhyhorn evolves at level 42.
Ryhorn evolves into Rydon at lv. 42. it will also learn Hammer Arm after it evolves.
trade it with a protector then trade it back
trade it into Pokemon emreld
give it to rydon and trade it to make him evolve
Give to a rydon and trade it and it will evolve into a ryperior.