Add to Cart EcoPower ECOPOWER 640T 13G WP MG SERVO - ECP640T EcoPower MSRP: Our Price: Sale Price: $29.99 Was: The Ecopower 640T 13g Waterproof Metal Gear Digital Sub Micro Servo is an incredibly powerful sub micro option developed to provide a more rugged upgrade for the Traxxas TRX-4. Also, when paired with... ECP640T