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"The 4GRS is an AWESOME radio! The system is very easy to use. The dial – properly placed above the throttle – clicks like a needle valve on an engine, which is a huge plus. The 4GRS also supports FHSS, S-FHSS and T-FHSS protocols, providing boaters with the reliability and security they can trust. The 4GRS never lets go of your boat, even if in long-range or upside-down conditions!"

— Mike "GrimRacer" Zaborowski

jog dia/buttonsMike "GrimRacer" Zaborowski
  • 2.4GHz FHSS logo
  • 2.4GHz S-FHSS logo
  • 2.4GHz T-FHSS Telemetry System logo

Everyone – from hard-core crawlers and scalers to competition boaters and racers – who demands the most from their radios will find that the 2-stick 4GRS meets and exceeds every requirement. Telemetry functions relay critical information to a graphic LCD screen. Extreme off-roaders will appreciate the dual ESC mixing for locking diffs, four-wheel steering and independent brake mixing. And the jog dial/button layout makes navigating menus quick and easy.


jog dia/buttons

wheelR304SB Reciever sticks have adjustable angles

The R304SB telemetry receiver keeps drivers apprised of important data such as temperature, receiver voltage, external voltage and RPMs.

Throttle and steering sticks have adjustable angles for comfortable "feel."

throttle ratchet gyro mixing

A throttle ratchet spring is an option for boaters.

Use the gyro mixing feature to control the GYC430 directly from the on-screen display.

[ Click here for a review by Big Squid RC ]




Product Flier
FUTK4220 4GRS 2.4GHz 4-Channel Computer Radio System
FUTL7680 R304SB 2.4GHz 4-Channel T-FHSS Rx
4GRS Manual




Optional Accessories
SBS-01RM Magnetic RPM Sensor
FUTM0852 SBS-01RM Magnetic RPM Sensor


Temperature Telemetry Sensor
FUTM0854 Temperature Telemetry Sensor


SBS-01V External Voltage Sensor
FUTM0855 SBS-01V External Voltage Sensor


SBS-01TE EP Temperature Sensor
FUTM0856 SBS-01TE EP Temperature Sensor


SBS-01RB Brushless Motor RPM Sensor
FUTM0857 SBS-01RB Brushless Motor RPM Sensor


HT5F1800B NiMH Transmitter Battery
FUTM1482 HT5F1800B NiMH Transmitter Battery


HBC-3B(4) Charger
FUTM1832 HBC-3B(4) Charger




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