Koso RX4 unlimited

RX-4 | Multifunction TFT Meter

The RX-4 multifunction TFT meter is the ideal solution for motorcyclists looking for a modern, feature-rich, and easy-to-read instrument. With a speedometer, odometer, tachometer, voltmeter, A/F ratio display, clock, and stopwatch, it reliably displays all essential riding information.

Thanks to Bluetooth connectivity, the RX-4 stands out from conventional instruments: Incoming calls, music information, and other smartphone data can be displayed directly. The large TFT display with multiple display modes ensures a clear overview on every drive.

Main Features & Properties

• TFT display: High resolution, multiple display modes

• Bluetooth: Display of calls & music information

• Vehicle information: speed, RPM, temperature, voltage, fuel

• Extended functions: Shift light, oil maintenance, A/F ratio measurement

• Compatibility: iOS & Android

Technical data

• Speedometer: 0–225 mph (0–360 km/h), switchable

• Odometer: up to 999,999 km

• Trip Meter 1 & 2: up to 9,999.9 km

• Low fuel range: up to 999 km

• Oil service interval: 300–10,000 mi (500–16,000 km) with warning

• Tachometer: 0–10,000 / 12,500 / 15,000 / 18,000 rpm

• Shift light: 1,000–10,000 / 12,500 / 15,000 / 18,000 rpm, adjustable

• Temperature display: 0–250 °C (32–482 °F), overheating warning adjustable (60–250 °C)

• Voltmeter: 8.0-18.0V, Low/High Warning

• Fuel gauge: 6 levels

• A/F measurement: range 12.1–17.5 (with adapter BO002001 & sensor BG000S01)

• Target values: Speed ​​0–360 km/h, distance 50–1,500 m

• Record functions: Top speed, distance, time

Smartphone connectivity

• Compatibility: iOS 5.0 and later, Android 9 and later

• Calls: iOS – name or number; Android – number only

• Online calls (LINE, WeChat, WhatsApp): iOS supported, Android not.

• Music information (iOS): Title (up to 15 characters), artist (up to 18 characters), playback duration & current time

• Info push: iOS supported

Table of Contents

• LCD measuring device – 1×

• Main wiring harness – 1×

• Active speed sensor – 1×

• Speed ​​cable (Type A) – 1×

• Speed ​​cable set (Type B) – 1×

• Sensor cable set – 1×

• Temperature sensor – 1×

• Mounting bracket for speed sensor M8 / S-type – 1×

• Mounting bracket for speed sensor M10 / S-type – 1×

• Hex bolt M5 × 5 P0.8 – 1×

• 2.5 mm hex key – 1×

• 3 mm hex key – 1×

• Measuring device holder – 1×

• Screw M5 × 12L mm – 1×

• Washer M5 – 1×

• Screw M6 × 35L – 1×

• Screw M8 × 30L – 1×

• Spacer M6 – 1×

• Spacer M8 – 1×

• M6 socket – 1×

• M8 socket – 1×