I also bought the 12s single motor kit off DIY and i topped out at 26mph with 90mm wheels and a 44t to 16t which gave me a 2.75:1 and I weigh 126 pounds. I used to run the 170kv motor and my god its torquey. Made my board lift a little, but now im running DIY's new motor the 230kv for hills. 12s...