H11 Quartz LED Kit 65W Guide light 5000K Lenticular Headlight

The brightness increase, + 270%, in lumens indicated compared to a halogen is a parameter calculated with REAL data with an ULBRICHT sphere.

The difference between a "classic" LED kit and a "quartz" one mainly concerns light management and the physical construction of the bulb.

While the classic LED relies on the raw power of the chips, the quartz version tries to mimic the physical behavior of old halogen bulbs to improve the light beam.

Here are the key points to understand which one to choose:

1. The Classic LED Kit (Standard)

• This is the most common model. The LED chips (usually CSP type) are mounted on a central metal plate (often copper or aluminum) that acts as a heat sink.
• Strong point: Maximum light output and proven reliability.
• Weak point: The thickness of the central plate can create "shadow areas" in the headlight, since the light is not emitted in a true 360° but from two opposing sides.
• Ideal for: Wide beam headlights where raw power helps cover the road well.

2. The Quartz LED Kit

• In these models, the LED chips are covered by a quartz glass tube or the holder itself is transparent.
• 360° Effect: Quartz glass acts like a prism. It refracts light so that it appears to come from a single central point, just like the filament of a genuine halogen bulb.
• Focus: Drastically reduces shadows. This is essential to avoid dazzling oncoming traffic and to achieve a sharper cut of light.
• Protection: Quartz protects LED chips from dust and moisture, maintaining more stable color rendering over time.
• Ideal for: Lenticular headlights (those with the round "lens") or very sensitive parabolic reflectors where beam precision is more important than raw power.