The GEMFAN D51 (2020-4) is a 2-inch four-blade propeller designed for ultra-stable micro FPV performance where smooth thrust, precise control, and efficiency are critical. The four-blade configuration increases disc loading, delivering improved stability and grip at low RPM—ideal for indoor flying, cinewhoop-style builds, and precision micro control.

Manufactured from durable polycarbonate (PC) and weighing approximately 0.91g per propeller, the D51 keeps rotational mass low while providing excellent airflow control. The 1.5mm T-mount (3-hole) interface ensures secure installation on compatible micro brushless motors.

Specifications

• Model: GEMFAN D51 (2020-4)

• Prop Size: 2 inch (≈50.3–51mm)

• Pitch: 1.9 – 2.0 inch

• Blade Count: Four-blade

• Material: Polycarbonate (PC)

• Weight: Approx. 0.91g (per propeller)

• Mounting / Hub: T-Mount 1.5mm (3-hole)

• Packaging: Pack of 4 propellers (2 × CW + 2 × CCW)

Key Features

• Four-blade design for enhanced stability and grip

• Smooth, controlled thrust ideal for micro FPV

• Lightweight construction for efficient motor performance

• Durable PC material for repeated indoor use

• Secure 1.5mm T-mount for micro brushless motors

Applications

• 2″ micro FPV drones

• Indoor flying and training

• Cinewhoop-style micro builds

• Precision and stability-focused setups

Features & Advantages

Enhanced Stability & Control
Four blades increase airflow density, improving hover stability and smoothness.

Ultra-Lightweight Design
Low mass reduces motor strain and improves flight efficiency.

Durable Construction
Polycarbonate material offers flexibility and crash resistance.

Secure Micro Mounting
1.5mm T-mount ensures reliable installation on micro motors.

Complete Set Included
Pack of 4 (2 CW + 2 CCW) ready for installation.