Futaba R404SBS-E 4-Channel (PWM) Surface Receiver with S.BUS for Telemetry F-4G (Internal Aerial) FUT05102701-3

Overview

The Futaba R404SBS-E is a professional-grade 4-channel PWM surface receiver designed specifically for electric-powered RC car models in the UK and beyond. This compact, lightweight receiver operates on Futaba's advanced F-4G 2.4GHz radio protocol, delivering high-speed response and reliable control for competitive and recreational electric vehicle enthusiasts. Whether you're racing an electric touring car, drifting vehicle, or running a high-performance electric buggy, the R404SBS-E provides the precision control and telemetry capabilities that serious RC drivers demand from their radio gear.

Built for performance and equipped with S.BUS2 connectivity for telemetry readout, this receiver represents the latest generation of Futaba surface receiver technology. It's supplied as standard with the Futaba T10PX-E transmitter, making it the go-to choice for drivers who already own compatible Futaba radio equipment or those looking to upgrade their RC car's control system. The receiver's compact dimensions and lightweight construction make it ideal for installation in tight spaces within modern RC vehicles, whilst its robust engineering ensures reliable operation in both indoor and outdoor environments.

If you're serious about RC car racing in the UK or simply want a dependable, feature-rich receiver for your electric-powered RC surface model, the R404SBS-E delivers professional-grade performance at a competitive price point. This is the receiver chosen by drivers who refuse to compromise on control quality or telemetry data.

Key Features

• 4-Channel PWM Control — The R404SBS-E provides four independent PWM channels, delivering precise digital control signals to your servo motors and speed controllers, ensuring accurate steering, throttle, and auxiliary function management across all your RC car's control systems.
• F-4G 2.4GHz Radio Protocol — Operating on Futaba's latest F-4G protocol, this receiver offers superior interference resistance and range performance using the globally recognised 2.4GHz frequency band, eliminating the need for crystal matching and providing automatic frequency hopping for reliable operation in crowded RC venues across the UK.
• S.BUS2 Telemetry Connectivity — The integrated S.BUS2 port enables real-time telemetry data transmission back to your transmitter, allowing you to monitor battery voltage, signal strength, and other vital performance metrics during operation, giving you complete awareness of your vehicle's status at all times.
• High-Speed Response System — Purpose-designed for electric-powered RC car models, this receiver features a high-speed response system that delivers immediate servo reaction time and throttle response, essential for competitive driving and precision control in both racing and recreational applications.
• Internal Aerial Design — The built-in internal antenna eliminates external protrusions that could interfere with vehicle aerodynamics or become damaged during crashes, whilst the indoor-optimised antenna design provides excellent signal reception in both indoor racing facilities and outdoor environments.
• Compact and Lightweight Construction — Measuring just 25.5 x 20.7 x 10.6mm and weighing only 7.2 grams, the R404SBS-E fits easily into the tightest installation spaces within modern RC car chassis, making it perfect for weight-conscious builds where every gram counts.
• Wide Operating Voltage Range — The receiver operates reliably across the 3.7V to 7.4V input voltage range, accommodating both single-cell LiPo batteries and multi-cell series configurations, providing flexibility in power system design for your RC vehicle.
• Exclusive F-G4 Protocol Support — This receiver works exclusively with Futaba F-4G and F-G4 protocol transmitters such as the T10PX-E, ensuring compatibility with modern Futaba radio systems whilst preventing accidental use with incompatible FASST, FASSTest, T-FHSS, or S-FHSS equipment.

Technical Performance

The Futaba R404SBS-E represents a significant advancement in RC surface receiver technology, engineered specifically for the demanding requirements of modern electric-powered RC cars. Its high-speed response system has been optimised through extensive testing to deliver the microsecond-level servo reaction times that competitive racers require, whilst maintaining the servo stability and control precision that recreational drivers expect. The receiver's 4-channel PWM architecture provides dedicated digital control signals for steering servo, throttle control, and two auxiliary functions, eliminating signal crosstalk and ensuring interference-free operation even in electromagnetically challenging environments. The compact 25.5 x 20.7 x 10.6mm form factor with 7.2-gram weight makes this receiver suitable for installation in virtually any modern RC car chassis, from lightweight 2WD touring cars to larger 4WD buggies and short-course trucks. The internal antenna design, optimised for indoor environments but equally effective outdoors, provides consistent 2.4GHz reception across typical UK racing venues and practice grounds. Operating voltage specifications of 3.7V to 7.4V provide exceptional flexibility, allowing use with single 3.7V LiPo cells through to dual 3.7V series configurations, accommodating both lightweight minimalist builds and fully-featured vehicles with multiple servo banks. The S.BUS2 telemetry protocol integration enables real-time data monitoring, though standard PWM servo connections remain fully supported for legacy equipment and simplified installations. The receiver's engineering emphasises reliability and consistency, with the high-speed response system delivering dependable performance across multiple consecutive runs and competitive events.

What's in the Box

• Futaba R404SBS-E 4-Channel PWM Receiver with S.BUS2 Telemetry
• Internal F-4G antenna

Compatibility and Important Safety Information

The R404SBS-E is designed exclusively for electric-powered (EP) RC surface models and must never be used in gas-powered vehicles. When using SR mode servos with this receiver, you must use SR mode-compatible servo equipment only, as the use of standard servos in SR mode may cause servo malfunction or damage. Under no circumstances should this receiver be installed in Grand Prix (GP) cars. Compatibility is limited to Futaba F-4G and F-G4 protocol transmitters such as the T10PX-E; this receiver is not compatible with S-FHSS, T-FHSS, FASST, or FASSTest radio systems. Before installation, verify your transmitter uses the F-4G protocol to ensure full compatibility and optimal performance.

Frequently Asked Questions

• Is the Futaba R404SBS-E suitable for competitive RC car racing in the UK? — Yes, absolutely. This receiver is designed specifically for competitive racing applications and is supplied as standard with the professional-grade Futaba T10PX-E transmitter. Its high-speed response system and 4-channel PWM architecture make it ideal for serious drivers competing in touring car, buggy, and short-course truck categories across the UK racing circuit.
• What voltage battery does this receiver need? — The R404SBS-E operates across a voltage range of 3.7V to 7.4V, meaning it can be powered by a single 3.7V LiPo cell up to dual 3.7V cells in series. This flexibility allows you to choose a battery configuration that suits your vehicle's weight and performance requirements without worrying about receiver compatibility.
• Can I use this receiver with my existing Futaba radio system? — Only if your transmitter uses the F-4G or F-G4 protocol. The R404SBS-E is not compatible with older FASST, FASSTest, T-FHSS, or S-FHSS systems. If you're unsure which protocol your radio uses, check your transmitter's manual or contact our expert team, and we'll be happy to confirm compatibility before you purchase.
• What does S.BUS2 telemetry mean, and do I need it? — S.BUS2 is a digital protocol that allows your receiver to send telemetry data back to your transmitter, showing you real-time information such as battery voltage and signal strength. Whilst it's not essential for basic operation, telemetry data is invaluable during racing, allowing you to monitor your vehicle's status throughout a run and make informed decisions about battery changes or vehicle adjustments.
• How small is this receiver, and will it fit in my RC car? — Measuring just 25.5 x 20.7 x 10.6mm and weighing 7.2 grams, the R404SBS-E is extremely compact. It's designed to fit into tight chassis spaces in modern RC cars, from 2WD touring cars to larger 4WD models, making installation straightforward for most electric-powered surface vehicles.
• Is this receiver waterproof for outdoor use? — Whilst the receiver is designed for outdoor operation, it's important to note that it features an internal antenna optimised for indoor environments. For outdoor racing, the internal antenna still provides reliable reception, but you should avoid submerging the receiver or exposing it to standing water, as it's not fully waterproof.
• What's the difference between this and other Futaba surface receivers? — The R404SBS-E combines 4-channel PWM control, S.BUS2 telemetry capability, the latest F-4G protocol technology, and a high-speed response system specifically optimised for electric car models. Its compact size and lightweight construction make it superior to older receivers, whilst its modern protocol and telemetry features ensure future-proof operation with the latest Futaba radio systems.
• Do I need any other equipment to use this receiver? — You'll need a compatible Futaba F-4G or F-G4 protocol transmitter (such as the T10PX-E), a suitable battery within the 3.7V-7.4V range, and servo motors or speed controller equipment compatible with PWM signals. Our team can advise on compatible components if needed.

Why Buy from RC Model Shop?

RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the Futaba R404SBS-E 4-Channel (PWM) Surface Receiver with S.BUS for Telemetry F-4G (Internal Aerial) FUT05102701-3 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.