HJG RTD Lens H4 50W Dual-Color LED Projector Bulb | Yellow 3000K Low Beam & White 6500K High Beam | 3500–5000LM | Cooling Fan | H4 Plug & Play | 12–80V DC | Bike & Car | Pack of 1

Upgrade your compatible H4 headlight with the HJG RTD Lens H4 LED Projector Bulb, designed to provide separate yellow and white beam colours for different driving conditions. The bulb delivers a yellow 3000K low beam and white 6500K high beam, combined with a dual-projector lens design for a focused lighting pattern.

With an integrated cooling fan, aluminium construction and H4 connection, this bulb is designed for compatible motorcycles and cars that use an H4 headlight holder.

Key Features

• Dual-Color Beam: Yellow low beam and white high beam provide two distinct lighting colours.
• Yellow Low Beam: Uses a specified 3000K yellow output for the low-beam function.
• White High Beam: Uses a specified 6500K white output for high-beam illumination.
• RTD Dual Projector Lens: Projector-style optical design helps create a more focused beam pattern.
• 35W–50W Power Range: Supplied specifications list a power range of 35W to 50W.
• Up to 5000LM Listed Output: The technical specification lists brightness between 3500 and 5000LM.
• Integrated Cooling Fan: Active cooling is designed to help manage heat generated during operation.
• Aluminium Construction: Made with die-cast aluminium for the bulb housing and heat-management structure.
• H4 Connection: Designed for vehicles equipped with a compatible H4 headlight holder.
• Plug & Play Design: Intended for straightforward installation where the vehicle's H4 connection is compatible.
• Water & Dust Protection: The supplied information specifies IP68 protection for the driver/connectors.
• Universal Application: Designed for compatible motorcycles, bikes and cars.

Technical Specifications

Yellow Low Beam & White High Beam

The HJG RTD Lens bulb is designed with two different beam colours:

Low Beam: Yellow, 3000K
High Beam: White, 6500K

This configuration gives compatible vehicles a different lighting colour for low- and high-beam operation while also adding a distinctive appearance to the headlight.

RTD Dual Projector Lens

The RTD Lens design uses a dual-projector optical configuration intended to provide a more controlled beam pattern.

The supplied product information states that the LED assembly is aligned during manufacturing to help achieve consistent beam positioning. Correct installation and headlight adjustment are still important for proper road illumination.

Integrated Cooling Fan

An integrated high-speed cooling fan is included to help manage the heat produced by the LED bulb.

The supplied specifications refer to a 12,000 RPM turbo cooling fan and a thermal-management design intended to improve heat dissipation.

Keeping the LED assembly within an appropriate operating temperature can help support reliable performance.

Die-Cast Aluminium Housing

The bulb uses die-cast aluminium construction, which is designed to assist with heat management while providing a durable housing.

The supplied information also describes a thermal-control system and aluminium radiator designed to improve heat dissipation compared with standard cooling structures.

H4 Plug & Play Connection

The HJG RTD Lens bulb uses an H4 connector.

Before purchasing, confirm that your motorcycle or car has an H4-compatible headlight holder. Physical fitment and available clearance should also be checked because H4 compatibility alone does not guarantee that every vehicle will accommodate the bulb housing and cooling fan.

Brightness & Lighting Performance

The supplied product information contains several different brightness claims, including 5,000LM and 10,000LM. The technical specification specifically lists 3500–5000LM, so this range is used as the primary specification above.

The product is intended to provide a focused LED beam with improved visibility compared with compatible conventional lighting systems.

Actual road illumination depends on the vehicle's reflector/projector housing, headlight alignment, electrical supply and installation.

Waterproof & Weather-Ready Design

The supplied specifications state IP68 protection for the driver and connectors and describe the system as suitable for wet-weather conditions.

For reliable operation, ensure that all electrical connections are correctly installed and sealed.

Vehicle Compatibility

The product is designed for compatible:

• Motorcycles
• Bikes
• Cars

The key requirement is an H4 headlight connection and sufficient physical clearance for the RTD projector bulb and cooling fan.

Before ordering, check:

• H4 socket/holder
• Available headlight housing space
• Bulb mounting depth
• Electrical system
• Connector compatibility
• Cooling-fan clearance

Installation Guide

Professional installation is recommended according to the supplied product instructions.

1. Switch off the vehicle before installation.
2. Remove the existing H4 bulb.
3. Check the H4 holder and mounting area.
4. Install the HJG RTD Lens bulb in the correct orientation.
5. Connect the H4 connector.
6. Ensure the cooling fan has sufficient clearance.
7. Secure the bulb correctly.
8. Test low beam and high beam.
9. Adjust the headlight alignment before driving.

Important Fitment Note

Please confirm compatibility before placing your order.

The product is described as suitable for universal bikes and cars, but actual compatibility depends on the H4 holder, housing dimensions, wiring and available space.

Do not force the bulb into a housing that does not provide sufficient clearance for the projector lens or cooling fan.

Safety & Road-Use Note

Always ensure that the installed beam pattern is correctly aligned and does not cause excessive glare to oncoming traffic.

The yellow/white dual-colour configuration may also be subject to local vehicle-lighting regulations. Check applicable road-use requirements before using non-standard lighting configurations on public roads.

Package Includes

• 1 × HJG RTD Lens H4 Dual-Color LED Projector Bulb

Why Choose the HJG RTD Lens H4 Bulb?

The HJG RTD Lens H4 bulb combines dual-colour high/low beam lighting, projector optics, active cooling and an H4 connection in a compact LED headlight upgrade.

It is designed for riders and drivers who want a yellow low beam and white high beam while maintaining an H4-style installation on compatible motorcycles and cars.

Riders looking for additional motorcycle accessories can explore related motorcycle parts and accessories for different bike applications.