~ Where passion meets precision · Atelier Haarlem since 2010 ~
Yes, the Koso Solar is E-marked (E4-50R-00 2195 01), which means it meets European road safety standards and is legal for use on public roads throughout Europe. However, always verify compatibility with your local regulations.
The Koso Solar has a universal fitment design with an 86mm diameter and 27mm depth, making it compatible with most custom motorcycles, cafe racers, and classic bikes. However, you may need an aftermarket mounting bracket depending on your specific frame. Check your bike's specifications or contact us for fitment advice.
The Koso Solar does not include built-in license plate illumination. You will need a separate license plate light to meet legal requirements in most regions. This is a common setup for custom builds where the taillight and plate light are independent units.
The Koso Solar uses high-power micro LEDs in a star pattern, making it extremely bright and energy-efficient. Exact current draw specifications are not listed, but LED taillights typically consume 0.5-1.0 amps, drawing minimal power from your motorcycle's electrical system compared to traditional halogen bulbs.
Installation is relatively straightforward. The taillight comes with all necessary mounting hardware. You'll typically need basic hand tools like wrenches or screwdrivers and a wiring harness suitable for 12V motorcycle systems. If you're not experienced with motorcycle electrics, we recommend consulting a professional mechanic to ensure proper wiring and grounding.
The Koso Solar features a robust black plastic housing designed to withstand road vibrations and weather exposure. While plastic is lighter than metal, it's resistant to corrosion and UV damage. Proper mounting and regular inspection will ensure long-term durability. Avoid impacts and ensure secure fastening to prevent cracking.
No, the Koso Solar is designed exclusively for 12V electrical systems. It is not compatible with 6V vintage motorcycles. If you have a 6V system, you'll need to either upgrade your motorcycle's electrical system or choose a taillight specifically designed for 6V operation.
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The Koso Solar LED taillight is a stunning retro-inspired lighting solution designed for custom motorcycle builds, cafe racers, and classic BMW motorcycles. Featuring a distinctive sun-burst pattern with high-power micro LEDs, this taillight combines vintage aesthetics with modern LED technology for superior brightness and reliability.
Built with a robust black plastic housing and EC-approved red lens, the Solar delivers exceptional visibility on the road while maintaining that authentic custom look. Whether you're restoring a BMW classic, building a cafe racer, or upgrading your custom motorcycle, this universal-fit taillight integrates seamlessly into your project.
The compact 86mm diameter design works with most custom motorcycle frames and aftermarket brackets.
This E-marked taillight meets European road safety standards and comes complete with all necessary mounting hardware for straightforward installation. Perfect for riders who demand both style and safety.
The Koso Solar LED taillight is a stunning retro-inspired lighting solution designed for custom motorcycle builds, cafe racers, and classic BMW motorcycles. Featuring a distinctive sun-burst pattern with high-power micro LEDs, this taillight combines vintage aesthetics with modern LED technology for superior brightness and reliability.
Built with a robust black plastic housing and EC-approved red lens, the Solar delivers exceptional visibility on the road while maintaining that authentic custom look. Whether you're restoring a BMW classic, building a cafe racer, or upgrading your custom motorcycle, this universal-fit taillight integrates seamlessly into your project.
The compact 86mm diameter design works with most custom motorcycle frames and aftermarket brackets.
This E-marked taillight meets European road safety standards and comes complete with all necessary mounting hardware for straightforward installation. Perfect for riders who demand both style and safety.
Expected back in stock around 17 July 2026
Temporarily out of stock. Leave your email and we'll notify you when it's back.
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