SKU: 71111485099

RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver

Sale price$41.39 Regular price$45.99
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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12

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Description

RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS ReceiverIntroducing the XR4 XrossBand Receiver The Pinnacle of compact Dual Band Performance The XR4 Receiver is a cutting edge true diversity dual band receiver featuring dual LR1121 RF transceivers, designed to leverage the advanced ExpressLRS Gemini Xrossband protocol (Gem X). It seamlessly supports both the 2. 4GHz and Sub G 900MHz bands, and its dual T type antennas provide superior reception sensitivity and connection stability for optimal performance.

Introducing the XR4 XrossBand Receiver – The Pinnacle of compact Dual-Band Performance

The XR4 Receiver is a cutting-edge true diversity dual-band receiver featuring dual LR1121 RF transceivers, designed to leverage the advanced ExpressLRS Gemini Xrossband protocol (Gem-X). It seamlessly supports both the 2.4GHz and Sub-G 900MHz bands, and its dual T-type antennas provide superior reception sensitivity and connection stability for optimal performance.

Built with two independent RF circuits, the XR4 offers versatile operation modes, allowing you to switch between Gemini single-frequency or Xrossband dual-band modes, and can be tailored to your specific needs. The integrated Wi-Fi module simplifies firmware updates and configuration via a user-friendly WebUI on your PC or mobile device.

With ultra-low latency and a high refresh rate, the XR4 excels in delivering a stable, rock-solid RF link, even in demanding long-range or challenging environments. Its compact, lightweight design is perfect for drones, and fixed-wing models, offering reliable connectivity in critical situations where every signal matters. The XR4 ensures you maintain the most secure and robust RF link available, providing unbeatable reliability in the most demanding conditions.

Check out all our ExpressLRS ProductsReceivers, and the rest of our RadioMaster Products!

Features:

  • True Diversity & Dual-Band
  • Unmatched reliability with ExpressLRS Gemini Xrossband
  • Compatible with ExpressLRS 2.4GHz, Sub-G 900MHz, Gemini & Gemini Xrossband (Gem-X)
  • ESP32D4 high-performance MCU
  • Twin Semtech LR1121 Transceiver
  • Secondary UART port for advanced functionality
  • Castled pads for easy soldering

Specifications:

  • Item: XR4 Gemini Xrossband Dual-Band Receiver
  • MCU: ESP32D4
  • RF Chip: LR1121 x 2
  • RF connector:  IPEX-1 X 2
  • Antenna: Dual-Band T Antenna x 2 (Included)
  • Frequency Range: 2.4GHz / Sub-G 900MHz
  • Telemetry Power: 100mw
  • Maximum receive refresh rate: DK500Hz / K1000Hz
  • Minimum receiver refresh rate: 50Hz
  • Working voltage: DC 5.0 - 12.6v
  • Weight: 1.7g (without antenna)
  • Dimension: 22mm * 18mm * 4mm
  • Firmware Version: ExpressLRS v3.5.1 pre-installed
  • FW Target: RadioMaster XR4 2.4/900 Gemini RX
  • Bus interface 1: CRSF
  • Bus interface 2: UART

Package Includes:

  • 1 * XR4 Gemini Xrossband Dual-Band Receiver
  • 2 * Dual-Band T-Antenna
  • 1 * CRSF Wire
  • 3 * Heat-Shrinkable Tube
  • 1 * Manual Card

    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 71111485099

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    4.4 ★★★★★
    Based on 19 reviews
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    Tracey
    Carnegie, US
    ★★★★★ 4
    Made it through the first season
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    Product value compared to name brands not to bad so for. Not sure I'd use it for contract work, but great for homeowner use. Engine seems to have an odd burning smell, but performs good (yes I have the correct oil/gas mix ratio which is 50:1). This is very similar to the Stihl models, aluminum shaft tubing on the attachments appear to be slightly thinner than Stihl, but they perform fine. So far it's been a great value for all the attachments you get in the kit. Definitely like the angle capability of the hedge trimmer and ease of changing out the attachments. Chain saw blade did dull fairly quick, but expected that based on it's size. Jury still out on longevity.
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    Reviewed in the United States on December 6, 2023
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    Verified Purchase
    Timothy Cummings
    Chelsea, US
    ★★★★★ 1
    Edger Does Not Fit The 52CC Trimmer
    Style: 9" 2T Cutting Blade
    Might be a great cutter head?? I purchased the 52cc trimmer and edger as a package, however the edger does not fit the trimmer??? Therefore, it is useless... Will see if it fits my 25cc trimmer and maybe change the review... They should tell people in the description that their edger will not work with the 52cc trimmer....
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 18, 2026
    B
    Verified Purchase
    Bayne Hayes
    Fort Morgan, US
    ★★★★★ 5
    That it will work on a Stil weedeater
    Style: 9" 2T Cutting Blade
    The edger connected to my Stil weed eater and worked great. I would recommend it to anyone.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 10, 2026
    P
    Verified Purchase
    Patrick V.
    Port Orchard, US
    ★★★★★ 5
    Cut edges like a pro
    Style: 9" 2T Cutting Blade
    Better, much better than the OEM yellow and black brand. This has an all metal guard and the blade does not bind when it comes into contact with concrete. I have used it all summer for edging two commercial properties and my own lawn, it’s still turning and cutting with ease. Being all metal adds weight but the trade off over fragile plastic is worth the durability.
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    Reviewed in the United States on November 4, 2025
    C
    Verified Purchase
    427Cobra
    Houston, US
    ★★★★★ 3
    OK for light duty use only
    Style: 9" 2T Cutting Blade
    Not very strong or robust. Does fit my power head properly. Only recommend it for occasional, light duty use.
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    Reviewed in the United States on November 5, 2025

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