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 design, machined and milled end bell, unique anodized coating and distinct "ATOMIC" logo. Fit: many chassis. *Check for fitment