2535 Sensored Motor, Brushless, 4-Pole, 680KVThe Castle 2535 680KV is the largest and most powerful motor ever produced by Castle in their 28+ year history. Designed to produce the torque and power for vehicles weighing up to 50lbs and up to 12s LiPo. When paired with the Castle Cobra 5 HV, the 2535 680kv can easily push 1 5th and 1 4th vehicles like the Losi 5IVE T, 5IVE B, or DBXL E. It is the perfect upgrade for any 1: 5 and 1: 4 scale RC hobby vehicles (including gas to electric conversions)