• What motorcycles is this dual headlamp assembly compatible with?

  The MCS Dual 4" H4 headlamp assembly is designed for custom motorcycle builds, particularly cafe racers, classic motorcycles, and BMW classic models. The side-mount configuration and compact dimensions (218mm width) make it adaptable to various frame designs. However, compatibility depends on your specific frame geometry and mounting points. We recommend measuring your bike's headlight area before ordering to ensure proper fitment.

• Is a wiring harness included, and what do I need to install this system?

  Yes, a complete wiring harness for twin headlamps is included with this assembly. For installation, you'll need basic hand tools, a socket set, and some electrical knowledge or assistance from a qualified mechanic. The harness connects to your motorcycle's electrical system—ensure your bike has adequate electrical capacity (typically 12V systems). If you're unfamiliar with motorcycle electrical work, we recommend having a professional mechanic handle the installation.

• What bulbs does this headlamp use, and where can I get replacements?

  This dual headlamp assembly uses H4 55/60W bulbs. H4 is a standard automotive bulb type widely available at motorcycle shops, auto parts stores, and online retailers. The 55/60W rating means 55W for low beam and 60W for high beam operation. When replacing bulbs, ensure you purchase quality H4 bulbs to maintain optimal brightness and reliability. Avoid touching the glass with bare hands when installing new bulbs, as this can reduce their lifespan.

• Can I use LED bulbs instead of halogen H4 bulbs?

  While some LED H4 replacements exist, we recommend sticking with OEM halogen H4 bulbs for this assembly. The headlamp housing is optimized for halogen bulb performance in terms of heat distribution and light projection. LED retrofits can sometimes cause improper light patterns or heat buildup issues. If you're interested in upgrading to LED technology, consider replacing the entire headlamp assembly with a dedicated LED model designed for your motorcycle.

• What is the overall width of the dual headlamp assembly, and will it fit my bike?

  The complete dual headlamp assembly is approximately 218mm wide. This is relatively compact compared to some other dual-lamp systems, but fitment depends on your motorcycle's frame width and existing mounting points. The assembly features side-mount capability, which provides flexibility for various installation angles. Measure the available space on your bike where you plan to mount the headlamps, and compare it with the 218mm width. If you're uncertain about fitment, contact our team for guidance.

• Is this headlamp assembly street-legal or certified?

  This MCS dual headlamp assembly is designed for custom motorcycle builds and provides functional lighting. However, street legality varies by region and country. Before installing this system on a street-ridden motorcycle, check your local traffic regulations and laws regarding headlight configurations. Some jurisdictions require specific lighting standards (ECE, DOT, or E-mark certification). If you plan to use this bike on public roads, consult your local automotive authority or a qualified mechanic to ensure compliance.

• What maintenance does this headlamp assembly require?

  The MCS dual headlamp assembly is relatively low-maintenance. Regularly check that the bulbs are functioning properly and replace them when they burn out (typical H4 bulb lifespan is 300-1000 hours depending on usage). Keep the glass lenses clean to ensure optimal light output—use a soft cloth and mild cleaner. Inspect the wiring harness periodically for signs of wear or damage, especially if your bike is exposed to harsh weather. Ensure all mounting bolts remain tight and check the connections at the electrical terminals for corrosion.

• Can I adjust the headlamp beam direction after installation?

  Most headlamp assemblies include adjustable mounting brackets that allow minor beam alignment adjustments. However, the MCS Dual 4" H4 assembly's adjustment capabilities depend on how you mount it to your specific motorcycle frame. Side-mount brackets typically offer limited vertical and horizontal adjustment. For precise headlight aiming, consult your motorcycle's manual or have a professional mechanic perform the adjustment using proper headlight alignment equipment. Proper beam alignment is important for both safety and visibility.

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