Not to sure of Trackstars quality anymore, had a couple AE SC18 SCT trucks, got a couple brushless motor/esc combos, worked great, couldn't be more happy with the performance for around $30, since then got a couple LC Racing SCT brushless trucks, decided to get the Trackstar 45a waterproof ESC, first one failed on the second battery pack, HKreplaced it plus freight, second one failed 30 seconds later, burning up servo and receiver wires,$60 to replace, store credit only from HK