The Gemfan 5127.9-3 is a high-performance 5-inch racing propeller co-developed with Australian FPV racer Thomas. Constructed from durable PC (polycarbonate), it features a 129.69 mm diameter and 2.79-inch pitch, delivering fast throttle response, strong thrust, and precise control for competitive racing.

Incorporating Gemfan’s patented airfoil design, the propeller utilizes a matte leading edge and smooth trailing edge surface treatment, reducing airflow separation and improving aerodynamic efficiency. At high speeds, it achieves approximately 5% increased thrust and efficiency, helping pilots gain a competitive edge on race tracks.

Key Features

• Co-developed with professional FPV racer for optimized racing performance
• Patented airfoil design enhances thrust and aerodynamic efficiency
• Matte leading edge + smooth trailing edge for improved airflow control
• Approx. 5% performance boost at high-speed conditions
• Durable PC material for impact resistance and reliability
• Designed for precise, high-speed racing control

Description:

Material: PC

Prop Diameter: 129.69 mm

Pitch: 2.79 inch

Center Thickness: 6.4 mm

Center Hole Inner Diameter: 5 mm

Max Prop Width: 15 mm

Weight (per prop): 4.4 g

Recomdended Motor: 2207

Maximum Takeoff Weight: 500 g

Package include:

2 X CW Propeller

2 X CCW Propeller