Those are the ones; I don't know exactly how much more or less torque they have, as helimax hasn't yet given any specs for their servos. But I doubt I'll strip an HS-55 as easily as one of the stock servos stripped. They fit perfectly and they will move in the correct directions with the stick inputs. Just read and follow page 11 of the manual about resetting the blade pitch (section called 'Servo Setup') after you've changed out the servos.