KKPIT RTS-X 4274 2100KV 4-Pole High-End Sensorless Brushless Motor

RTS X-Series – High-End Sensorless Brushless Motor Born for the Extreme

The RTS X-Series 2100KV motor is engineered for uncompromising performance and durability. It features 220°C high-temperature enameled wire, a reinforced explosion-proof rotor, and an ultra-high slot fill design, making the motor core virtually indestructible. A CNC-machined aluminum housing with high-density cooling fins improves heat dissipation efficiency by up to 30%, ensuring continuous peak power.

Unlike low-cost direct wiring, the X-Series employs thick copper terminals and high-temperature silicone wires for superior conductivity and reliability. Every detail is optimized to deliver an ultimate power experience under extreme conditions.

Performance Advantages

• High-temperature wire withstands 220°C, a 46.6% improvement over conventional 150°C wires
• Lower resistance (5.5 mΩ) enables higher current flow and greater efficiency
• Explosion-proof rotor ensures maximum reliability under heavy loads
• Withstands 180°C operating conditions, offering 66.6% higher thermal endurance than standard motors

Technical Specifications

• Type: Brushless, Sensorless
• Poles: 4
• KV Rating: 2100KV
• Supported LiPo Cells: 2–6S
• No-load Current: 2.6A
• Max Load Current: 140A
• Max Power: 2800W
• Resistance: 5.5 mΩ
• Dimensions: Ø42 × 78 mm
• Shaft Diameter: 5 mm
• Weight: 450 g

Recommended Applications

• 1/8 Off-road Buggies & Truggies
• 1/8 Monster Trucks
• 1/8 Short Course Trucks
• Suitable for high-power, high-temperature, and extreme racing environments