Hobbywing Fan Combo C4 (Heat Sink + 5v Fan) For 44mm Motor \n\nThe Hobbywing Fan Combo C4 (Part No: HW86080130) is a heavy-duty thermal management system specifically designed for large-scale brushless motors with a 44mm diameter. This size is the standard for 1/8 scale motors, such as the Hobbywing EZRUN 4274 or XERUN 4268/4274 series. By combining a massive, high-surface-area aluminum heatsink with a high-velocity 5V fan, the C4 combo prevents motor overheating during aggressive 4S\u20136S bashing sessions or long main events on the race track.\n\nKey Features:\n\n--Large-Scale Cooling: The heatsink is specifically contoured to fit 44mm cans (also commonly referred to as \""42mm series\"" motors when accounting for the cooling fins), providing maximum contact for heat dissipation.\n--High-RPM Cooling Fan: Includes a durable 5V fan that provides consistent airflow even in dusty or high-vibration environments typical of 1/8 scale off-road racing.\n--Secure Tension Fit: The wrap-around ;