Radiolink R4FGM 2.4Ghz 4-Channel Mini RC Receiver - Compact Gyro

In this review the Radiolink R4FGM 2.4Ghz 4-channel mini receiver is judged on fit, range and ease of use for micro RC projects. It is aimed squarely at hobbyists who need a tiny, reliable receiver for 1:28 scale cars and similar micro vehicles; the single biggest reason to buy is its combination of an integrated gyro and extreme compactness that lets it fit where full-size receivers cannot. Binding is simple and the receiver supports high voltage servos, making it a practical upgrade for small drifting and on-road builds.

Key Features

• Mini size: At 0.98 x 0.51 in and about 0.1 oz it fits inside tight chassis spaces used by 1:28 scale cars.
• Integrated gyro: The built-in gyro helps keep small vehicles in a straight line and allows sensitivity adjustment from the transmitter for drifting or precise on-road control.
• Good range: The pseudo random FHSS algorithm provides reliable anti-interference performance and control range up to about 1300 ft on flat ground.
• Wide input voltage: The 3.0-6V power range supports high voltage servos so users can run stronger steering actuators without a separate BEC.
• Reverse polarity protection: The receiver is protected if power polarity is accidentally reversed, preventing immediate damage in the field.
• Simple bind and mode switching: Binding requires a one second press and a quick triple press toggles gyro mode, reducing setup fuss.

Who It's For

The R4FGM is ideal for hobbyists building micro RC cars, small boats, or any project requiring a compact 4-channel receiver with gyro assistance; its tiny footprint and light weight are perfect for 1:28 class vehicles and Hot Wheels-style conversions. It also suits modders who need an easy bind process and adjustable gyro for drifting practice.

It is not suited for users who need compatibility with non-Radiolink transmitters or those who require more than four channels. If you need long-range telemetry or advanced protocol support beyond Radiolink radios, this receiver is not the best choice.

Pros & Cons

Pros

• Very compact and lightweight, making it easy to install in tight micro chassis.
• Built-in gyro with transmitter-adjustable sensitivity improves straight-line stability and drift control.
• Reliable binding and good on-ground range thanks to FHSS anti-interference.
• Reverse polarity protection and support for 3.0-6V reduce the risk of damage and allow high voltage servos.

Cons

• Only compatible with Radiolink transmitters, so it will not work with many other radio brands.
• Limited to four channels, so it is not suitable for vehicles needing more channels or complex telemetry.

Specifications

Channels	4
Size	0.98 in x 0.51 in
Weight	~0.1 oz
Operating voltage	3.0-6V
Range	Up to 1300 ft (approx 400 m) on ground
Key feature	Integrated gyro with transmitter-adjustable sensitivity
Compatibility	Radiolink radios (RC8X, RC4GS V3/V2, RC6GS V3/V2, T8S, T8FB, T12D, T16D)

Our Verdict

The Radiolink R4FGM is a practical, value-oriented receiver for micro RC cars and small boats where space is at a premium; its miniature size, built-in gyro and simple bind procedure make it a strong choice for hobbyists who use Radiolink transmitters and want improved handling without complex setup. It offers good range and protection features for the price, but buyers needing cross-brand compatibility or more channels should look elsewhere.

Frequently Asked Questions

Will this work with non-Radiolink transmitters?
No. The R4FGM is designed for Radiolink radios and is not compatible with non-Radiolink transmitters.

Can I adjust the gyro strength?
Yes. Gyro sensitivity can be adjusted from the transmitter and gyro mode is toggled with a quick triple press.

What voltage servos can I run?
The receiver supports 3.0-6V input, so high voltage servos are supported without extra converters.