Description: 540 55T Waterproof Brushed Motor + 1060 Electronic Speed Controller 60A ESC for 1/10 RC Car HPI Traxxas Suit for 1/10 RC Car Buggy Short Course Truck, Monster Truggy, Rock Crawler and Tank Waterproof and dust-proof, suitable for all-weather condition races Small size with built-in capacitor module Great current endurance capability Great built-in BEC output capacity Specification: Size: 540 Turns: 55T Watts: 38W Power supply: 1-3S LiPo Battery RPM: 8100 ±10%rpm Max amps: 20A Shaft diameter: 3.175mm Shaft length: 16mm Size Chart: Motor size: Approx. 36 x 54mm/ 1.41 x 2.12inch ESC size: Approx. 35 x 25 x 20mm/ 1.37 x 0.98 x 0.78inch Package Includes: 1 Piece 540 55T Motor 1 Piece 1060 60A ESC