Product Overview
The High Mass Universal Digital Speedometer is a comprehensive motorcycle dashboard instrument designed to provide accurate speed, odometer, and other essential vehicle data. This adjustable meter supports a maximum speed of 199 KM/H and is suitable for a wide range of motorcycles.
Crafted from durable ABS material, this black digital speedometer offers reliability and clear visibility of information.

Figure 1: Front view of the High Mass Universal Digital Speedometer. The display shows digital readouts for speed, RPM, gear, total trip, and clock, along with indicator lights for turn signals, high beam, engine check, and fuel level.
Key Features
- High Mass Material: Crafted from premium materials for durability and longevity.
- Universal Compatibility: Designed as a universal replacement, suitable for various motorcycle brands and styles.
- Sturdy and Reliable: Engineered to withstand road rigors, offering exceptional stability and strength.
- Adjustable Display: Features an adjustable instrument for optimal viewing and customization.
- Comprehensive Data: Displays speed (up to 199 KM/H), RPM, gear, odometer, and clock.
Installation Guide
Proper installation is crucial for the correct functioning of the digital speedometer. It is recommended that installation be performed by a qualified technician.
Pre-Installation Check
- Ensure the motorcycle's power is off before beginning installation.
- Verify all components are present and undamaged.
- Familiarize yourself with the wiring diagram (if provided separately with the product).
Mounting the Unit
- Identify a suitable mounting location on your motorcycle's dashboard.
- Secure the speedometer using appropriate brackets and fasteners (not included unless specified).
- Ensure the unit is firmly attached and does not obstruct rider view or controls.

Figure 2: Rear view of the High Mass Universal Digital Speedometer with indicated dimensions (100.5mm, 141mm, 41.3mm) and the attached wiring harness.
Wiring Connections
Connect the speedometer's wiring harness to the motorcycle's electrical system according to the specific wiring diagram for your motorcycle model and the speedometer. Pay close attention to power, ground, speed signal, RPM signal, and indicator light connections.
Note: Incorrect wiring can damage the unit or the motorcycle's electrical system. Consult a professional if unsure.
Operating Instructions
Initial Power-On
- After installation, turn on the motorcycle's ignition.
- The speedometer display should illuminate and perform a self-test.
- Verify that all indicator lights (turn signals, high beam, neutral, etc.) function correctly when activated.
Display Functions
- Speed Display: Shows current speed in KM/H (adjustable to MPH if supported by internal settings).
- RPM Display: Indicates engine revolutions per minute.
- Gear Indicator: Displays the current gear (if connected to a gear sensor).
- Odometer: Records total distance traveled.
- Trip Meter: Records trip distance (resettable).
- Clock: Displays current time.
- Fuel Level: Indicates fuel tank level (if connected to a fuel sensor).
Setting Adjustments
The speedometer features adjustable settings. Typically, a button or combination of buttons on the unit allows for cycling through display modes (e.g., total trip, trip A, trip B) and entering setup mode for adjustments like time, wheel circumference, and unit (KM/H vs. MPH). Refer to the specific button functions on your unit for detailed instructions.
Maintenance
- Cleaning: Use a soft, damp cloth to clean the display and casing. Avoid abrasive cleaners or solvents.
- Connections: Periodically check all wiring connections to ensure they are secure and free from corrosion.
- Environmental Protection: While designed for motorcycle use, avoid prolonged exposure to extreme weather conditions when possible.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power/Display Off | Loose wiring connection; Blown fuse; Faulty power source. | Check all power connections; Inspect and replace fuse if necessary; Verify motorcycle battery voltage. |
| Inaccurate Speed Reading | Incorrect wheel circumference setting; Faulty speed sensor connection. | Adjust wheel circumference setting in the speedometer menu; Check speed sensor wiring and sensor functionality. |
| RPM Not Displaying | Incorrect RPM signal connection; Sensor issue. | Verify RPM signal wire connection (e.g., to ignition coil); Check RPM sensor if applicable. |
| Indicator Lights Not Working | Loose or incorrect wiring for specific indicator; Faulty bulb/LED. | Check wiring for the affected indicator; Ensure correct polarity; Replace faulty indicator component if separate. |
If the problem persists after attempting these solutions, please contact customer support or a qualified motorcycle mechanic.
Specifications
- Model: H-gj001
- Material: ABS
- Color: Black
- Max Speed Display: 199 KM/H
- Package Dimensions: 9.84 x 7.87 x 5.91 inches
- Item Weight: 1.76 Pounds
- Manufacturer: ZHONGX SHOP
- ASIN: B0FC6L1H6F
- First Available Date: June 6, 2025
Warranty and Support
This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. For specific warranty terms and conditions, please refer to the documentation included with your purchase or contact the seller.
For technical support, troubleshooting assistance, or inquiries regarding parts and service, please contact the manufacturer or your point of purchase. Keep your purchase receipt as proof of purchase for warranty claims.