I ran my d8 with castle creations 2200kv system,with a losi 4 cell and the thing was friggin great all day. put 4 packs on it today. changed the rear springs an shock oil, also front springs. changes the roll center and got the car working great was putting a hurting on losi 8e and rc8e teno conversion. Tore up got more runs in one day with the castle then i ever got out my novak hope it keeps up.