Himax 2025-3200 Brushless Gear Drive Himax 2025-3200 Gear Drive comes with a Himax 2025-3200 brushless motor (Kv: 3200), an aluminum dual ball bearings gearbox frame, 3 different gear ratios (4.4:1, 5.3:1, 6.6:1), a harden output drive shaft, and a 3.0 mm Aluminum Prop Adaptor to take APC props. It's a direct upgrade for GWS EPS-300/350 and EPS-400 Gear Drives with the same 10.0 x 10.0 mm mounting box. The built-in cooling fin on the aluminum gearbox frame keeps the motor cooler.