Gemfan D4-5 Ducted 101mm 4" Propeller (M5) (2CW+2CCW)

The Gemfan D4-5 is a 101mm ducted propeller engineered for heavy 4-inch cinewhoops carrying full-sized action cameras. Generating adequate lift on a ducted quad without sacrificing control resolution requires high disc solidity. The D4-5 achieves this via a 5-blade profile that grips the air firmly, delivering the low-end thrust necessary to push heavy payloads smoothly through tight indoor spaces.

At exactly 101mm in diameter, these propellers are specifically cut to match standard 4-inch duct housings. This precise sizing ensures tight tip clearances that drastically reduce vortex losses, improving overall thrust efficiency and battery life. Designed with a robust standard hub, they are a direct drop-in for standard cinewhoop drivetrains.

Key features

• 5-blade geometry maximises thrust and grip for heavier 4-inch ducted builds

• 101mm diameter ensures tight duct clearances to minimise tip vortices

• Durable polycarbonate construction withstands duct strikes during complex proximity lines

• Standard M5 centre hub mounts securely onto traditional FPV motors

Specifications

• Diameter: 4" (101 mm)

• Pitch: 3.8"

• Blades: 5

• Mounting: M5

• Material: Polycarbonate (PC)

• Weight: 5.5 g per propeller

• Recommended motors: 2207 or 2306, for a quad of about 600 g

• Pack contents: 2 CW + 2 CCW

• Colours: Macho Pink, Midnight Grey, Yellow