When it comes to building the “perfect” FPV drone, choosing the right motors can make all the difference in terms of flight performance, efficiency, durability, and overall experience. This review will evaluate MEPS’ newest NEON 2505.5 and 2203.5 motors. These two 5″ motors represent different philosophies, each catering to specific needs and flying styles.
Five-inch FPV drones are probably the most popular among freestyle and cinematic pilots. They provide the perfect balance between power, agility, weight, and versatility. They’re large enough to carry heavier components like higher-capacity batteries, 4K cameras, and other additional accessories, but they’re still small and agile enough for fast maneuvers and precise control.
While the NEON 2505.5 is recommended for 5-6″ freestyle FPV drones, the NEON 2203.5 is perfect for 3-5″ lightweight long-range drones. The “NEON” color scheme is not just there to make them look cool; it also acts like “signaling smoke”, making the drone visible wherever it is in the air or crashed and needs to be found.
MEPSKing NEON 2505.5 & 2203.5 review
Disclosure: I received these FPV motors for a product review collaboration with MEPS King. Although the products were offered for free, all opinions in this article remain my own, and the sponsor did not influence me.
In 2024, we reviewed several MEPS motor sets, flight controllers, and ESCs. All of them were of excellent quality at an attractive price. I was thrilled when they contacted me again to test the new series of motors called NEON. Of the eight models available, I chose these two as they have slightly more unique sizes for 5″ drones.
Besides the two sets of motors, the package also included four pairs of SZ4942 propellers (two pairs of gray and two of orange). Both types of motors come with included 5mm propeller lock nuts, a spare shaft screw, and two sets of mounting screws.
For newbies, I’ll recap that, usually, in the case of FPV motors, the product name refers to the stator dimensions. Therefore, a 2505 motor has a 25mm x 5mm stator, and a 2203 motor has a 22mm x 3mm stator. A larger stator diameter generates more torque, allowing the motor to spin larger or heavier propellers more efficiently. This results in better control, faster throttle response, and improved performance in freestyle and racing quads. On the other hand, smaller stators are more efficient at high RPMs because they require less energy to spin. This efficiency translates into longer flight times, especially when flying at higher throttle inputs. They also draw less current, helping to extend battery life and reducing the load on the ESC.
MEPS NEON 2505.5
As you can see in the photo below, the NEON 2505.5 is a pretty large 5″ FPV motor, especially if you’re used to the more commonly used 2307 and 2207 motors. A larger stator in FPV motors offers several advantages, including more torque, increased thrust, improved cooling, and greater stability.
Intended for extreme conditions, these motors use 220℃ high-temperature-resistant military-grade pure copper windings, a robust steel shaft, and a 6082-T6 aluminum uni-bell body to ensure exceptional impact resistance.
The motors weigh about 35 grams and have 150mm long pre-tinned wires for easy soldering. A slight grip is milled into the top of the bell to prevent the propeller from slipping.
Technical parameters
| Dimensions | 31.29*29.98mm |
| Weight (including wires) | 35 grams |
| Stator size | 25×5.5mm |
| Shaft diameter | φ 5mm |
| Lead length | 150mm |
| Rated voltage (LIPO) | 6S |
| KV | 2000 |
| Configuration | 12N14P |
| Internal Resistance | 61mΩ |
| Idle Current(10V) | 1.8A |
| Peak Current(60S) | 45.3A |
| Max power | 1114W |
MEPS NEON 2203.5
The MEPS NEON 2203.5 are the shortest 5-inch FPV motors I have ever held. A smaller stator height in FPV motors has several advantages, particularly for lightweight and efficiency-focused builds:
- Lower Power Consumption: Shorter stators draw less current, improving efficiency and extending battery life, which is ideal for long-range and endurance flights. The NEON 2203.5 requires approximately 200W when powered by 6S LiPos and around 460W on 4S builds.
- Faster RPM Response: Smaller stators have lower rotational inertia, allowing quicker throttle response and more precise control.
- Reduced Weight: A shorter stator reduces the overall motor weight, making the drone more agile and improving acceleration. The NEON 2203.5 weighs only 20g, making it about 50% lighter than 2207/2306 motors. It is ideal for sub-250g setups where minimizing weight is crucial.
The NEON 2203.5 motors are also made of high-quality materials, such as 220℃ high-temperature-resistant military-grade pure copper windings, a robust steel shaft, and a 6082-T6 aluminum unibell body.
MEPS King suggests that, in an optimal setup, you can achieve up to 30 minutes of flight time, which is impressive for a custom-made 5″ drone.
Technical parameters and KV comparison table
| KV | 1500 | 3550 |
| Lead | 150mm 24AWG | 150mm 24AWG |
| Weight(incl. cable) | 20g | 20g |
| Motor Dimension | 27.75*28.45mm | 27.75*28.45mm |
| Shaft Diameter | φ5mm | φ5mm |
| Lipo compatibility | 6S | 4S |
| Configuration | 12N14P | 12N14P |
| Internal Resistance | 246mΩ | 80mΩ |
| Idle Current(10V) | 0.6A | 1.4A |
| Peak Current(60S) | 8.7A | 29.5A |
| Max Power | 206.7W | 461.3W |
| Compatible frames | 5-inch | 3 and 4 inches |
Pricing, KV, and color options
These FPV motors are available in two colors, NEON green and NEON pink, with two KV options, and can be purchased directly from MEPS’s online store. During their Spring Sale, you can get the NEON 2505.5 motor for $17.91 (35% off from regular price) and the NEON 2203.5 motor for $10.71 (46% off from regular price). The MEPS SZ4942 3-blade propellers shown in this review can be purchased for $1.94 $/set (46% off).
NEON 2505.5 vs 2203.5: Find out which motor suits your flying style!
Let’s summarize what we’ve learned about these motors and what each is suitable for. As you can see in the comparison table below, the NEON 2505.5 motor is larger and heavier, providing more torque and is ideal for carrying additional payloads like action cameras. In contrast, the NEON 2203.5 is lighter, contributing to longer flight times and agility. The 2505.5 generates more than twice the thrust of the 2203.5 and has a corresponding power demand as well.
| NEON 2505.5 | NEON 2203.5 | |
| Stator Size (Diameter x Height) | 25mm x 5.5mm | 22mm x 3.5mm |
| Weight | 35g | 20g |
| Mounting pattern | 16x16mm | 12x12mm |
| KV options | 2000KV and 2500KV | 1500KV and 3550KV |
| LIPO compatibility | 4-6S | 4-6S |
| Propellers size | 4-6inch | 3-5inch |
| Max thrust | 1718g | 769g |
| Max power | 1114W | 461.3W |
| Suitable for | Power-hungry drones. Freestyle and cinematic flying, especially with action cameras | Lightweight builds. Long-range flights with extended flight times |
| Price | $17.91 | $10.71 |
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