Main Drive Gear:134T Tail Drive Gear:21T Drive Gear Ratio:11.17:1:3.81 Weight (With Motor):1400g Includes: T-REX 500XT Top Combo Kit (1) Microbeast PLUS Flybarless System (1) 520MX Brushless Motor (1600KV) (1) RCE-BL80A Brushless ESC ...