AtomicRC's Upgrade/optional MOTOR, SENSORD, Brushless 4500KV Zenon. NOT your average 15mm, run of the mill 130 size motor! 16mm diameter, HIGH TORQUE, SENSORED motor with an all new design. Featuring: *larger motor can, new design internal windings and larger magnet! Attractive milled and vented motor can, new desiign, machined and milled endbell, unique anodized coating and distinct "ATOMIC" logo. Fit: many chassis. *Check for fitment