Main Gear Set Replacement For C186 C187 C138 RC Helicopters Durable Drive Gears 2 Pack For Smooth Power Transmission On Bo105 EC135 And 206 Series Models

Main Gear Set Replacement for C186/C187 EC135 & 206 RC Heli
✔️ 2-pack main gear set for C186/C187 EC135 & 206 RC Heli

The main gear set is a direct replacement designed for C186, C186MAX BO-105, C187 EC135, and 206 RC helicopters. It helps maintain stable power transmission for smooth flights during everyday use.

✅ Compatibility: C186 C186MAX BO-105, C187 EC135, 206 RC helicopters
✅ Material: Durable engineering plastic with precise gear teeth
✅ Size: 30x30x8 mm / 1.18x1.18x0.31 in
✅ Pack: 2 gears per pack

💡 What is a main gear set used for in RC helicopters?

A handy, durable replacement that keeps the drivetrain reliable and efficient, helping your helicopter perform consistently.

• Maintains stable power transmission from motor to rotor gear
• Reduces gear wear and potential stripping under load
• Contributes to quieter operation and improved control response
• Delivers a direct replacement with identical dimensions for quick maintenance

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