Gemfan Flash 2540 2.5-Inch 3-Blade High-Performance Propeller
The Gemfan Flash 2540 is built for pilots who demand immediate throttle response and explosive vertical authority. By pairing a tri-blade layout with an aggressive 4-inch pitch, it delivers rapid acceleration and sustained power output. Whether you are tearing through freestyle lines, executing fast vertical climbs, or practicing micro racing, the Flash 2540 provides the instant thrust feedback needed to push your quad to the limit.
Key Features
- Aggressive 4-Inch Pitch: Delivers high top-end speed and instantaneous thrust response during rapid throttle changes.
- 3-Blade Control: Maximizes air bite for superior cornering grip and smooth recovery out of dives.
- Secure 3-Hole Mount: Precision-engineered t-syle fixed mounting interface ensures a rigid, slip-free connection under high torque, and a 1.5mm shaft hole.
- Durable Polycarbonate: Resists cracking and deflection during hard freestyle landings and gate clips.
- Complete Set: Ships as a matched pack containing 2 clockwise (CW) and 2 counter-clockwise (CCW) propellers.
Specifications
| Model | Gemfan Flash 2540 |
|---|---|
| Propeller Diameter | 2.5 inch |
| Pitch | 4 inch |
| Blade Count | 3 |
| Material | Polycarbonate (PC) |
| Prop Hub Diameter | 9.2 mm |
| Hub Thickness | 5 mm |
| Max Blade Width | 9.9 mm |
| Mounting Interface | 3-hole fixed |
| Weight | Approx. 0.98 g (per prop) |
| Recommended Motors | 1105 (Compatible with 1104–1106) |
Recommended Setup
- Motors: 1104 to 1404 brushless motors
- Propellers: Gemfan Flash 2540
- Electronics: 20A–30A micro AIO or stack flight controller
- Battery: 2S–4S LiPo configured for high-performance micro freestyle
What’s in the Box
- 2 x Gemfan Flash 2540 CW Propellers
- 2 x Gemfan Flash 2540 CCW Propellers


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