This E-Bike is engineered and highly tested to provide you with the ultimate Rambo riding experience. The Dominator is built in 2 different configurations (Ultra and HD) please understand both options to understand which one better suit your needs! The Dominator Ultra focuses on riders that want amazing power with rider pedal feedback, but sacrifices motor noise VS the Dominator HD. Every aspect of our Dominator Ultra was designed and manufactured to produce an extremely reliable and durable E-Bike with NO limitations.