Surpass Hobby F540 4370KV Brushless Motor & 45A ESC Combo

Unleash serious power on your 1/10 or 1/12 scale RC vehicle with the Surpass Hobby F540 Power Combo. Engineered as a direct drop-in upgrade to replace slow stock setups, this 4370KV Brushless Motor and 45A ESC combo is built around a 4-pole 12-slot high-torque rotor packed inside a finned 6061-T6 aluminum heatsink can. Delivering 820W of output with exceptional heat dissipation, its high-purity copper windings and high-precision ABEC5 bearings ensure smooth power delivery up to 48,000 RPM with minimal friction and noise.

Paired with a waterproof 45A ESC equipped with a cooling fan and built-in 5.8V/3A SBEC, this combo provides reliable throttle control, low-voltage protection, and plug-and-play convenience. The 5.8V high-voltage BEC delivers extra power to unlock better response and torque from your steering servo. This power system offers the ideal balance of torque, durability, and raw speed.

Application: This motor fits standard 1/10 scale RC cars designed for 3650-sized motors, but it is tuned for lighter setups. Due to its high KV rating, it is ideal for 1/12 scale vehicles and lightweight 2WD 1/10 cars, buggies, or road cars. It is not recommended for heavy 1/10 4WD off-road monster trucks or short-course trucks.

Best Suited For: Hobbyists looking for a simple brushed-to-brushless upgrade, intermediate bashers, and kit builders wanting a budget-friendly power system that still delivers high performance.

Key Features

• 820W High-Torque Performance: 4-pole 12-slot design provides intense acceleration and continuous power for 1/10 and 1/12 scale models.
• Premium Heat Management: Features a finned 6061-T6 billet aluminum heatsink body and high-temperature copper windings (rated up to 180–200°C).
• Precision Dynamically Balanced Rotor: Explosion-proof rotor balanced to within 10mg ensures silky-smooth operation at ultra-high RPMs; fully removable and replaceable.
• Waterproof 45A ESC with SBEC: Includes an integrated cooling fan, a 5.8V/3A BEC to boost steering servo performance, and pre-soldered T-plug (Deans) & 4.0mm bullet connectors.

Specifications

F540 Brushless Motor

• Brand: Surpass Hobby
• Model: F540 (Fin-cooled 3650-size housing)
• KV (RPM/V): 4370KV
• Rotor Design: 4-Pole / 12-Slot
• Max Power: 820W
• Max Current: 66A
• Max Voltage: 7.4V (2S) – 11.1V (3S)
• Outer Diameter: 36 mm
• Length: 50 mm
• Shaft Diameter: 3.175 mm (1/8")
• Shaft Length: 15 mm
• Mounting Screws: M3 multi-mount pattern
• Bearings: High-RPM ABEC5 Sealed Bearings
• Motor Connector: 4.0 mm Gold Bullet Plugs
• Weight: 146 g

45A Electronic Speed Controller (ESC)

• Continuous Current: 45A
• Burst Current: 260A (10 sec)
• Input Voltage: 2–3S LiPo / 4–9 Cell NiMH
• BEC Output: SBEC 5.8V / 3A
• Power Connector: T-Plug (Deans Male)
• Motor Connectors: 4.0 mm Female Bullet Plugs
• Dimensions: 45 x 35 x 35 mm (including fan)
• Weight: 76 g

What's in the Box

• 1 x Surpass Hobby F540 4370KV Brushless Motor
• 1 x Waterproof 45A Brushless ESC (with integrated cooling fan & power switch)
• 1 x Product Instruction Manual

Notes & Warnings

• Required to run (Not Included): 2S or 3S LiPo battery with a T-Plug connector, plus a pinion gear with a 3.175mm (1/8") bore diameter.
• 3S LiPo Gearing Caution: When running on a 3S LiPo (11.1V), this 4370KV motor will approach ~48,000 RPM. Reduce your pinion gear size by 2–3 teeth to prevent thermal overload on the ESC and motor.
• Click here to learn more about motor KV and battery voltage matching