- Steering Functions: Travel / Balance / Speed (1~2Way) / Curve / Center Trim / Sub Trim / Trim Rate / Reverse / Steering Monitor / Quick Steering
- Throttle Functions: High Point / Brake / Curve / Punch / Speed (1~3Way) / Acceleration / Active Brake System (ABS) / Preset / Automatic Start / Sub Trim / Trim Rate / Reverse / Thorttle Monitor / Quick Throttle
- Timer Functions: Lap Timer / Down Timer / Alarm / Pre-alarm / Lap Navigation / Stop Watch
- Others: Auto Display / Idle Up / Position Display / Direct Set / Electrim / Digital Grip Dial / Battery Alarm / LCD Contrast / LCD Back Light / 30 Model Memory / Model Name / Model Select / Model Copy / Memory Recall / Memory Restore / Memory Reset / Channel Select (for use of channel 4) / Beeper Pitch Shift / Adjust Volume / Set Up / EEP ROM <3CH> 3CH Monitor / Configuration of 3CH <4CH> 4CH Monitor / Configuration of 4CH


The KR-302FS is a 3CH FM receiver available in 27MHz.
The wheel extension for the EX-1 UR # 17006 (left) drops the steering wheel down for a different balance of the radio. The gold screws # 17002 (right) replaces all of the screws for the wheel extension with gold.
The Tamiya wheel adapter (left) allows you to use wheels with the hex type of pattern found on touring car wheels. Offered in Black (#16092), Green (#16094), Yellow (#16095), Pink (#16096), and Orange (#16097). The Tx stand allows you to place your Mars radio down without tipping over. Offered in Black (#16082), Green (#16084), Yellow (#16085), Pink (#16086), and Orange (#16087).
Replacement color grips are available for the Mars series of radios. Each set includes the front and rear handle grip and the trigger grip. Offered in Black (#16052), Yellow (#16055), Pink (#16056), Orange (#16057), Green (#16058), and Gray (#16060).