Hobbywing xerun axe plus r3 & axe 540l 2800kv r2 motor the hobbywing combo xerun axe plus r3 with the axe 540l 2800kv r2 motor is a top-tier electronic speed control (esc) and motor system designed for rc car enthusiasts who demand precision and performance. This combo features the latest advancements in hobbywing's technology, ensuring smooth and precise control over your vehicle's movements. Features xerun axe plus r3 stronger performance thanks to foc (field-oriented-control) technology. Drag brake adjustable up to 200% for unparalleled holding power on slopes. Super bec with max. 6a and three voltage levels for using different servos. Waterproof and dustproof to ip67 standard. Smart torque delivery and speed control for easy control and constant speed under all loads. Built-in bluetooth module. Multiple controller protection functions including reverse polarity protection. Only compatible with xerun ax ""r2"" and ""r3"" motor series. Technical specifications xerun axe plus r3 type: brushless sensored foc current (cont. /peak): 135a / 600a cells: 2s-6s lipo motor limits: only supports xerun-axe ""r2"" and ""r3"" motor series axe r2: 540 / 540l / 550 axe r3: 4274 bec: 6v / 7. 4v / 8. 4v @ 6a (switch mode) waterproof: yes cables: 1x 12awg (black, 265mm), 1x 12awg (red, 265mm) fan: 25 x 25 x 10mm, powered by bec connectors: xt60 programming: per bluetooth and ""hw link""-app firmware upgrade: yes dimensions: 49. 5 x 37. 9 x 32. 8mm weight: 126. 5g application: 1/10, 1/8, 1/6 rock crawler features axe 540l 2800kv r2 motor minimal cogging torque soft starting behaviour optimized for sensitive performance development waterproof and dustproof for almost every situation including a newly designed waterproof sensor port the built-in high-precision magnetic encoder sends more information to the esc than before technical specifications axe 540l 2800kv r2 motor type: sensored brushless foc poles: 4 kv rating: 2800kv lipo cells: 2-3s no-load current: 3. 6a outer diameter: 36. 0mm length: 57. 8mm shaft diameter: 3. 175mm shaft length: 16mm waterproof: yes weight: 213g application: 1/10 rock crawler (hw38020388)