Koso meters are designed to give riders clear, reliable information in a compact and modern display, making them a smart upgrade for both custom builds and everyday motorcycles.

The DB-03R is a multifunction meter with a modern casing that provides necessary critical readings. The DB-03r features all standard indicators needed to operate a vehicle on the street as well as 3 adjustable RPM/TACH scales to choose from in the settings.

• Clear speed and distance information
• Tachometer/RPM information for performance monitoring
• Easy-to-read display with backlight functionality
• Temperature monitoring where supported
• Voltage monitoring where supported

Specifications

• Speedometer.
• Range: 0 ~ 225 MPH (0 ~ 360 km/h | Unit: MPH or km/h.
• Odometer Range: 0 ~ 99,999 miles (km) | | Unit: 1 mile (km)
• Tripmeter A/B Range: 0 ~ 999.9 miles (km) | | Unit: 0.1 mile (km)
• Total hour meter Range: 0 ~ 99,999 H | | Unit: 1 H.
• Hour meter A/B Range: 0 ~ 999.9 H | Unit: 0.1 H.
• Tire circumference Range: 300 ~ 2,500 mm | | Unit: 1 mm Sensitive point: 1 ~ 20.
• Tachometer Range: 10,000 RPM (1 level = 166 RPM) 12,000 RPM (1 level = 200 RPM) 15,000 RPM (1 level = 250 RPM)
• RPM warning / shift‑light Range: 1,000 ~ 15,000 RPM | | Unit: 100 RPM.
• Warning Light on (F‑OFF) | Flash (F‑ON)
• Maximum RPM record Range: 0 ~ 10,000 / 12,000 / 15,000 RPM.
• RPM input signal number setting Range: 0.5, 1 ~ 24.
• RPM input pulse Range: HI‑ACT (positive wave pulse) LO‑ACT (negative wave pulse)
• Volt meter Range: DC 8 ~ 18 V Flashing warning when voltage is lower than DC 11.5 V or higher than DC 15.5 V.
• Thermometer Range: 32 ~ 482 °F (0 ~ 250 °C) | Unit: 0.1 °F or °C (alternative)
• Over temperature warning Range: 140 ~ 482°F (60 ~ 250°C) | | Unit: 1°F (°C)
• Top temperature record Range: 0 ~ 482°F (250°C)
• Fuel meter Range: 6 levels | | Unit: 1 level = 16.6 %