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Upgrade your headlights with the new SL1 LED.

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Engineered for Performance. Made in USA.

True Upgrade. Other LEDs on the market are too big, have no hotspot in the beam pattern, or they simply stop working after just a few months. The SL1 LED headlight bulb finally provides a true upgrade in performance, with its compact size, optically correct output, and high reliability. The Lumileds chips shine in a true white 5700K color temperature, without any hint of blue, for an OEM-style appearance.

Focused Output. Don't be fooled by high lumen numbers or "projector specific" bulbs. If the light source is out of focus, it doesn't matter how bright it is. You won't have a focused hotspot of light to shine down the road, you'll just have more glare. To correct this, SL1 LED headlight bulbs were engineered with advanced optical design software, to perfectly match filament location of the original bulb. Learn more here.

The SL1 LED is designed to shine light just like the original bulb, which improves the capability to preserve the focus and hotspot of the lamp, with no added glare. 

Tested and Verified. To make sure everything works as intended, we use photometric test equipment to measure the entire beam pattern with the SL1 installed. A CNC rotating head called a goniometer holds a headlight. First, photometric test points are measured, as defined by SAE. In certain headlamp applications as tested, the SL1 LED bulb meets these photometric test point standards for beam pattern and total output, which we call Street Legal. Learn more here.

Next, the entire beam pattern is mapped. This provides a full picture of the resulting output, and allows us to compare to the original bulb. Just take a look at the "bird's eye view" test results! In the headlamp applications we have tested, there is 30-70% more light in focus in the primary hotspot test point, effectively shining more light down the road, with no added glare.

Fitment. With its patented design, the SL1 LED headlight bulb fits where other bulbs won't. It will fit under dust caps, and in tight spaces with no modification. There's no hanging metal straps. It's simply a compact bulb that plugs right in.

Reliability. The SL1 LED is a durable, reliable bulb, and is backed by a three year warranty. From the high-temperature teflon wire, to the zinc castings, every part of the the SL1 was designed for reliability. The driver uses a unique boost-mode circuit, which prevents thermal imbalance in the LEDs, and has transient protection for long life in automotive circuits.

Finally, the SL1 bulb was put through its paces in our environmental testing chambers, through dozens of thermal cycles, from -40 to 150 degrees Celsius. We also test for vibration and electrical transient voltage to ensure long life. Learn more here.

If you’re looking to replace your factory headlight bulbs, it’s time to upgrade to LED headlight bulbs. Unlike other generic bulbs on the market, our SL1 LED headlight bulbs have been designed to put more light where you need it—the road, while being compact enough to fit in vehicles where bulkier LED light bulbs won’t. Best of all, installing the SL1 is easy and only takes minutes. Simply remove your halogen bulb, and the SL1 fits directly in its place—no modification needed. So if you’re looking to replace your headlight bulbs, upgrade to the next generation of headlight bulbs—SL1 LEDs.