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HIKARI
HIKARI Ultra LED Headlight Conversion Kit
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Best LED Headlight Bulbs · head-to-head
HIKARI Ultra LED Headlight Conversion Kit vs Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance
A sourced, side-by-side comparison. Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance is cheaper at $80. Every spec and price links to its source.
Diode Dynamics
Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance
$80
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | HIKARI Ultra LED Headlight Conversion Kit | Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance |
|---|---|---|
| US price | — | $80 |
| Brand | HIKARI | Diode Dynamics |
| Released | — | — |
| Lumens per set | 5470 | — |
| Color temp k | 6450 | 6000 |
| Bulb fitment | Sold in multiple common sizes incl. H11/H8/H9; the specific size independently bench-tested is not stated | H9, 9005 (HB3), 9006 (HB4) only — never offered in H11 |
| Wattage (W) | 23.1 (per bulb, independently measured) | — |
| LED chip type | Philips Lumileds Luxeon Z ES (6 per bulb, 3 per side) | — |
| Beam pattern | 5-star low-beam pattern rating (BulbFacts independent test) | Manufacturer-claimed 30-70% more light in the critical hotspot vs. halogen (ray-trace-optimized optics) |
| Cooling | Fan-cooled, 32mm heatsink, external removable driver | Active — Sunon bearingless microfan, direct-solder copper core board, thermally-modeled zinc casting |
| Rated lifespan hrs | 60000 | — |
Sources — HIKARI Ultra LED Headlight Conversion Kit: bulbfacts.com (verified 2026-08-12). Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance: diodedynamics.com (verified 2026-08-12).
What's the difference between the HIKARI Ultra LED Headlight Conversion Kit and Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance?
Where the two actually differ on the specs we track (4 of 8). Matching specs are omitted.
- Color temp k: HIKARI Ultra LED Headlight Conversion Kit 6450 vs Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance 6000
- Bulb fitment: HIKARI Ultra LED Headlight Conversion Kit Sold in multiple common sizes incl. H11/H8/H9; the specific size independently bench-tested is not stated vs Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance H9, 9005 (HB3), 9006 (HB4) only — never offered in H11
- Beam pattern: HIKARI Ultra LED Headlight Conversion Kit 5-star low-beam pattern rating (BulbFacts independent test) vs Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance Manufacturer-claimed 30-70% more light in the critical hotspot vs. halogen (ray-trace-optimized optics)
- Cooling: HIKARI Ultra LED Headlight Conversion Kit Fan-cooled, 32mm heatsink, external removable driver vs Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance Active — Sunon bearingless microfan, direct-solder copper core board, thermally-modeled zinc casting