# Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance vs Morimoto 2Stroke 4.0 H11 LED Headlight Bulbs: specs and price compared

A sourced, side-by-side comparison of the Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance (Diode Dynamics) and Morimoto 2Stroke 4.0 H11 LED Headlight Bulbs (Morimoto) among led headlight bulbs. Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance is the cheaper of the two at $80.

## Side by side

| Spec | Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance | Morimoto 2Stroke 4.0 H11 LED Headlight Bulbs |
| --- | --- | --- |
| US price | $80 | $142.4 |
| Brand | Diode Dynamics | Morimoto |
| Lumens per set | — | 5200 |
| Color temp k | 6000 | 5500 |
| Bulb fitment | H9, 9005 (HB3), 9006 (HB4) only — never offered in H11 | H11 (2Stroke 4.0 line also covers H7, H4, H13, H1, H3, H8, H9, 9005, 9006, 9007, 9012, 5202, 880, and D2H) |
| Wattage (W) | — | 18-22.5 (per bulb) |
| LED chip type | — | Osram Oslon Black Flat S, 5500K |
| Beam pattern | Manufacturer-claimed 30-70% more light in the critical hotspot vs. halogen (ray-trace-optimized optics) | — |
| Cooling | Active — Sunon bearingless microfan, direct-solder copper core board, thermally-modeled zinc casting | Dual-layer fan (draws cool air in, exhausts warm air through the housing) |
| Rated lifespan hrs | — | — |

## Key differences

- Color temp k: Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance 6000 vs Morimoto 2Stroke 4.0 H11 LED Headlight Bulbs 5500
- Bulb fitment: Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance H9, 9005 (HB3), 9006 (HB4) only — never offered in H11 vs Morimoto 2Stroke 4.0 H11 LED Headlight Bulbs H11 (2Stroke 4.0 line also covers H7, H4, H13, H1, H3, H8, H9, 9005, 9006, 9007, 9012, 5202, 880, and D2H)
- Cooling: Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance Active — Sunon bearingless microfan, direct-solder copper core board, thermally-modeled zinc casting vs Morimoto 2Stroke 4.0 H11 LED Headlight Bulbs Dual-layer fan (draws cool air in, exhausts warm air through the housing)

## Sources

- Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance: https://www.diodedynamics.com/sl1-led-bulbs-pair.html (diodedynamics.com, verified 2026-08-12)
- Morimoto 2Stroke 4.0 H11 LED Headlight Bulbs: https://www.morimotohid.com/morimoto-2-stroke-2stroke-h11-led-bulbs_3 (morimotohid.com, verified 2026-08-12)

Canonical: https://frontdeskreview.com/gear/led-headlight-bulbs/diode-dynamics-sl1-vs-morimoto-2stroke-4-0/
Cite: Per The Front Desk Review, Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance ($80) vs Morimoto 2Stroke 4.0 H11 LED Headlight Bulbs ($142.4) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/led-headlight-bulbs/diode-dynamics-sl1-vs-morimoto-2stroke-4-0/
License: CC BY 4.0.