This new radio is lighter than its predecessor thanks to titanium screws, has a 5% faster response speed, uses a shorter antenna, and even comes with aluminum neck strap hardware. Check out the official press release below for more info:
A transmitter that’s 5% faster – with additional mixing options, a more comfortable wheel grip and more. These are a few of the upgrades the Futaba team of engineers developed for the new 4PK Super R. And the 4PK Super R comes equipped with the R614FS 2.4GHz FASST 4-Channel Receiver. The R614FS is a compact, lightweight, high-voltage unit, offering Dual Antenna Diversity that selects the best reception between two antennas and Pre-Vision™ technology that scans and filters incoming data. With the introduction of the 4PK Super R, the premier Futaba surface system for competitive drivers is better than ever!

Specification:
5% faster response speed
Lighter in weight thanks to titanium screws, a shorter antenna and aluminum neck strap hardware
Dual compound steering wheel foam grip for greater comfort
Model data transfer via cable
Model memory for 40 models
Gyro mixing – compatible with Futaba’s new GYC430 gyro
Dual ESC mixing – ideal for crawlers
Anti-skid braking system
Throttle acceleration
Throttle speed
Start function
Steering Speed
Racing Timer
Digital trim w/ reset function
Function select switch function
MC-Link
Edit button lock & trim/dial lock function
Wheel & Trigger position can be changed
Left handed support
Tension adjustment function
Mechanical ATL adjustment
Display switch
Vibrator built into the grip
7-color LED pilot lamp