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Flysky FGr4B 2.4GHz 4CH AFHDS 3 Enhanced RC Receiver
Flysky
SKU: 202412SID143
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$35.99
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Regular price
$42.99
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$35.99
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Most orders are shipped within 48 hours
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Flysky FGr4B 2.4GHz 4CH AFHDS 3 Enhanced RC Receiver
Sale price
$35.99
Regular price
$42.99
Regular price
$35.99
Unit price
per
Frequently Asked Questions
What is the difference between the FGr4B and FGr4S?
The FGr4B has an external single antenna that you can position for optimal signal routing — useful in metal-chassis RC cars where a built-in antenna would be shielded. The FGr4S has a fixed built-in single antenna, making it even more compact but less flexible for antenna placement. Both support AFHDS 3 and the same output modes.
What is the difference between the FGr4B and FGr4D?
The FGr4D is the more advanced model: it has dual built-in antennas, IPX6 nano waterproof coating, BVD battery voltage detection, and i-BUS2 support. The FGr4B has a single external antenna, no waterproofing, and standard i-BUS (no i-BUS2 or BVD). Choose the FGr4B if you need a small, antenna-flexible receiver without special waterproofing; choose the FGr4D for wet environments and full telemetry.
Which transmitters are compatible with the FGr4B?
The FGr4B is compatible with all Flysky AFHDS 3 transmitters and RF modules, including PL18, PL18 EV, Paladin EV, NB4, NB4 Lite, NB4 Pro+, NB4+, and PA01. It is not compatible with AFHDS 2A transmitters.
Can I configure the FGr4B output mode?
Yes. The FGr4B output mode (PWM, PPM, i-BUS, or S.BUS) is configured via the paired transmitter menu. Refer to your transmitter’s manual or the Flysky RGB Assistant software for configuration steps.
What failsafe behavior does the FGr4B have?
If no failsafe is configured on the transmitter, the FGr4B will stop PWM/PPM/i-BUS output when signal is lost. S.BUS holds the last received value. If failsafe is configured, all channels output the preset safe values defined in the transmitter.
What's in the Box
- 1x Flysky FGr4B Receiver
- 1x Bind Cable
- 1x External Antenna
Let customers speak for us
It arrived in a timely manner
Joshua
Big Hands
Bought this to put in place of the smaller wheel on my NB4+. I have large hands, this bigger wheel allows my movements to be more precise due to larger diameter. Direct fit to an NB4+.
James Robert
Great addition for the Noble
It fits great and looks awesome. I really like the lower mount and it keeps the weight lower when you have a camera attached
JONATHAN STATHIS
Great addition to the radio!
Great addition to the radio!
Chris C
Lanyards are awesome they gave me a cool little pin as an extra purchase bonus and I was totally happily surprised with stickers 10 out of 10
jonathan leatherman
Gt5 steering pointometer
Thank you for the rc part i just recived it and it works great there was a misunderstanding about the tracking number but everthing is good now i will buy from you again thank you
Joseph Degiorgio
Soarsky Flysky NB4/NB4+/Pro/Pro+ metal bright green skin radio sticker
I really like this product. The shipping was pretty fast. The green finish looks amazing. Really changed the look of my NB4 pro+.
Thanks Soarskyrc.
David Spencer
Great spares!
So great to be able to get real spares?
Brendan M
Producto recomendado
Yunior
Awesome design and build quality. Purple flake carbonfiber looks awesome. Adds ability to wireless charge the battery in handle.
NATHAN
Products is excellent. Have had this many times. Love them. Easy, convenient, steady
Timothy
👌
Axel Galinat
Bert nice produkt! Thanks for producent this! Keep up the good work :)
Flysky 303 with soarsky mod/mount for Flysky Noble+
Nikola Awasthi
nice frame bit pricey but nice.
nice frame easy to put together had some issues with leds but after reording new leds works fine.
MICHAEL ALEXANDER
Good response
Quick and efficient with no concern
Bill Brandt
Description
The Flysky FGr4B is a compact 4-channel enhanced receiver built on the AFHDS 3 protocol. Unlike the entry-level FGr4S, the FGr4B features an external single antenna for improved placement flexibility and signal reliability. It supports PWM, PPM, i-BUS, and S.BUS output modes and is fully compatible with all AFHDS 3 transmitters. At just 17 × 29 × 16mm and 6.4g, it is one of the most compact receivers in the Flysky AFHDS 3 lineup.
📋 Contents
Key Features
- ✅ AFHDS 3 Protocol — 3rd-gen Flysky 2.4GHz with bidirectional telemetry and excellent anti-interference
- ✅ External Single Antenna — repositionable antenna for optimal signal routing in tight installs vs fixed built-in designs
- ✅ 4 Channels / Multi-Output — PWM, PPM, i-BUS, and S.BUS selectable output modes
- ␅ Ultra-Compact Form Factor — 17 × 29 × 16mm, 6.4g; fits in the tightest RC car and boat builds
- ✅ Wide Input Voltage — 3.5–9V DC; compatible with most RC power systems
- ✅ Online Firmware Update — update via transmitter without PC connection
- ✅ Failsafe Protection — configurable out-of-control protection
- ✅ RSSI Telemetry — real-time signal strength feedback to transmitter
Review Video
Real-world review: Flysky FGr4B AFHDS 3 enhanced receiver with external antenna
Gallery
FGr4B — front view showing external antenna connector and port layout
FGr4B — ultra-compact footprint: 17 × 29 × 16mm, 6.4g
FGr4B — PWM / PPM / i-BUS / S.BUS output pin layout
Specifications
Transmitter Compatibility
Compatible with all AFHDS 3 transmitters and RF modules, including:
- Flysky PL18 / PL18 EV / Paladin EV
- Flysky NB4 / NB4 Lite / NB4 Pro+ / NB4+
- Flysky PA01
- Any AFHDS 3-capable RF module
Package Includes
- Flysky FGr4B Receiver × 1
- Bind Cable × 1
- External Antenna × 1
Related Reading
Deciding between Flysky AFHDS 3 receivers? These SoarSky guides cover comparisons, use-case selection, and feature differences:
- 📖 The Difference Between Flysky FGr4B and FGr4D Receiver — external antenna vs dual built-in antenna, IPX6 waterproofing, i-BUS2 and BVD compared
- 📖 The Difference Between Flysky AFHDS 3 Receivers — full lineup comparison: FGr4B vs FGr4S vs FGr4D and more
- 📖 Flysky AFHDS 3 Receiver Buying Guide 2026: 7 Popular Models Compared — detailed side-by-side specs and best-use-case recommendations
- 📖 How to Choose a Flysky AFHDS 3 Receiver for Boat & Ground Vehicles — application-specific guide for RC cars, boats, and aircraft
Shipping Info
🏭 Fulfillment Warehouses
SoarSky operates warehouses in the US, Europe, and China. Orders are fulfilled from the nearest local warehouse. If local stock is unavailable, your order will ship from our China warehouse and international shipping times will apply.
💰 Shipping Rates
| Type | Condition | Cost |
|---|---|---|
| Free Shipping | Orders over $100 | Free |
| Standard Shipping | Orders under $100 | Based on weight & address |
| International Shipping | All international orders | Based on destination & weight |
💡 Tax Notice: Import taxes are covered by SoarSky RC for most countries. For a small number of countries where local regulations require the recipient to pay taxes, the amount is based on the declared value set by SoarSky RC.
⏱️ Dispatch & Delivery Times
⚡ Most orders are dispatched within 48 hours of placement.
| Region | Estimated Delivery |
|---|---|
| Domestic (US) | 5–10 business days |
| International | 10–15 business days |
* Customs processing may affect international delivery times.
🚫 Shipping Restrictions
⚠️ Important: We cannot deliver to PO Boxes, APO/FPO, or other military addresses.
Some remote areas may experience longer delivery times or limited shipping options. We will notify you if any issues arise.
📦 Order Tracking
Once your order ships, you will receive a confirmation email with a tracking number. Track your shipment via:
| Platform | Link |
|---|---|
| 17Track | www.17track.net |
| SoarSky Order Tracker | soarskyrc.com/pages/track-order-1 |
📬 Contact Us
If you encounter any issues such as damaged items or lost packages, please contact our customer service team as soon as possible and we will work to resolve it promptly.
✅ Email: soaringskystore@protonmail.com