I'ma second John and Tex on this one-JR650's are the way to go. These are, by far, the best servo's I've ever had. The specs mean nothing- These'll torque the wheels side to side on my revo or k2 (I have one on steering for both) like there was no tommrow. These are great, for the price, These should probably be around $75...They could get that easy. Try one, and you will like it.