Lumibright XT1 LED Review
A discontinued premium LED with exceptional historical reflector and projector output, a clean beam pattern, realistic lumen claims, and adjustable hardware—preserved as a version 1.0 test rather than a current-chart ranking.
- Reflector performance
- 5.3original score · 5.0 reference baseline
- Projector low beam
- 3,320 luxper bulb · historical v1.0 test
- Measured output
- 6,060 lmper kit · 3,030 lm per bulb
- Color temperature
- 5,950 Kmeasured · claimed 6000K
Our verdict
The original Lumibright XT1 combined unusually strong reflector and projector results with a controlled reflector pattern, believable lumen claim, modest electrical draw, and useful clocking adjustment. It was one of the strongest products in its 2019 test group, but it is now discontinued and its version 1.0 measurements should remain within that historical context.
What we liked
- A 5.3 original reflector performance score against the 5.0 reference baseline, plus a separate 5 / 5 reflector beam-pattern rating.
- Large recorded gains in both reference housings, including 5,950-lux reflector and 3,320-lux projector low-beam hotspots.
- Measured output of 3,030 lumens per bulb closely matched the 2,850-lumen manufacturer claim.
What to consider
- The version 1.0 scores and lux readings are not directly interchangeable with today’s LED chart results.
- A separate fog-light test recorded substantially more glare even though the headlight reflector pattern was excellent.
- DRL behavior varied below 7 volts, and exact-vehicle fitment, cabin noise, RFI, and long-term lifespan remain unconfirmed.
Build quality
The XT1 was a new and relatively compact product when BulbFacts tested it. Lumibright supplied the sample but did not pay for or control the review, and the measured results—not the sample arrangement—drove the conclusion.
The bulb used a substantial finned active-cooling body, flat emitter board, removable external driver, and an adjustable collar. Lumibright told BulbFacts that the design used a top-tier Philips diode; that supplier statement was not independently verified, although the concentrated beam and high output were consistent with premium hardware.
Four genuine BulbFacts photographs document the tested bulb pair, emitter body, rear fan, and driver. Later XT1 Gen2 imagery belongs to a different test record and is not presented here as original-XT1 evidence.
Reflector headlight performance
The original XT1 combined exceptional reflector output with the highest recorded headlight beam-pattern rating in its version 1.0 test.
Historical-test context: The 5.0 value was the scoring reference baseline rather than a maximum. These version 1.0 scores and lux readings are preserved as recorded and are not positioned among products tested with the current chart method. They are reference-housing results, not exact-vehicle results.
The original scoring system did not include total lumens. This score is preserved without treating it as a current-chart ranking.
- Low-beam hotspot
- 5,950 luxper bulb · historical v1.0 test
- High-beam output
- 7,110 luxper bulb · historical v1.0 test
- Glare measurement
- Not recordedno added headlight glare noted
- Beam pattern
- 5 / 5separate pattern rating
A high-beam test image is not available in this review.
The XT1 recorded a 5.3 reflector performance score in the original test. Because 5.0 was the reference baseline rather than the maximum, the score is shown without a “/5” suffix. It ranked second in that historical reflector group.
Reflector low beam measured 5,950 lux per bulb against 1,610 lux for the recorded standard-halogen reference, or about 3.7 times the output. High beam measured 7,110 lux per bulb against 3,550 lux for halogen—an exact 100% increase in that setup.
The separate 5 / 5 reflector beam-pattern rating describes shape, not the performance score. The original headlight test noted no additional glare but did not preserve a numerical headlight-glare reading. A separate reflector fog-light test measured 705 lux per bulb and 133% more output, while glare rose to 78 lux two inches above the cutoff at 12 feet versus 18.5 lux for halogen; that fog result should not be generalized to the headlight housing.
Projector headlight performance
Projector low beam was another standout result in the original test group, while high beam delivered a smaller but still useful gain.
The original article recorded the projector lux results and its tied top placement, but not a numerical projector performance score. No score is inferred here.
- Low-beam hotspot
- 3,320 luxper bulb · historical v1.0 test
- High-beam output
- 5,000 luxper bulb · historical v1.0 test
- Glare measurement
- Not recordedhistorical projector test
- Beam pattern
- Not ratedno numerical record
A high-beam test image is not available in this review.
The archived article did not preserve a numerical projector performance score, so the strong result is described through its recorded measurements rather than given a new score.
Projector low beam measured 3,320 lux per bulb against 876 lux for the halogen reference, nearly 3.8 times the output. The XT1 tied the Hikari Ultra for the top low-beam placement in that historical test group while producing the whiter beam noted by the reviewer.
Projector high beam measured 5,000 lux per bulb against 3,200 lux for halogen, roughly 1.5 times the output. The original review still noted that other products could be better for dedicated high-beam projector use. Numerical projector glare and pattern ratings were not recorded.
Output, color, and stability
The XT1's measured output was close to its claim, which was refreshing compared with many inflated LED listings.
Lumibright XT1 Kelvin
Lumibright XT1 lumens
The color temperature tested at 5,950K, a clean white with a slight cool tint and close to the claimed 6000K rating.
Lumens are a secondary measurement compared with beam lux, but they still help explain total output. Many Amazon and eBay products claim huge numbers that do not match reality, while premium brands tend to publish more believable figures.
The XT1 claimed 2,850 lumens per bulb, and BulbFacts measured 3,030 lumens per bulb, or 6,060 lumens per kit, after two minutes of stabilization with passive bench cooling. That is unusually close to the claim.
The archived review did not preserve cold-start, two-minute, and 30-minute output values or a long-term drop percentage. Those stability fields remain unavailable rather than being reconstructed.
Installation and cooling
The clockable collar, removable external driver, moderate power draw, active fan, and low-voltage behavior are the main practical considerations before installing remaining stock.
Measured draw
Recorded temp
Fan noise
Physical size and fit
The bulb measured 36 mm at its widest point, 38 mm from the base to the rear, and 41 mm through the diode-handle dimension. The archived facts also list a separate 47 × 28 × 12 mm heat-sink dimension.
The collar could be adjusted in 10-degree increments. The diodes normally need to face left and right, then be checked against the original halogen cutoff and the housing re-aimed if necessary. Confirm bulb type, seating, rear clearance, dust-cover space, driver placement, and electronics for the selected vehicle.
Power draw and cooling
Power consumption measured 25.1 watts per bulb; the 50.2-watt pair total is derived from that result. The lower draw may help in some systems but does not guarantee decoder-free operation in every vehicle.
The heat sink reached 93°F / 34°C in the original bench test, compared with about 160°F for the halogen reference described in the archived article. The fan exists to control LED-chip temperature; this short test is not a durability result.
Noise, electronics, and DRL behavior
Fan noise measured 65 dB on the bench. The original reviewer expected installed noise to be minor, but no in-cabin sound measurement was recorded.
The XT1 passed the CANBUS checks used in the original review. That is useful historical evidence, not a guarantee for every monitoring system. Radio-frequency interference was not recorded.
On a standard power line, the bulb cut out at 7.0 volts or less. Some high-beam DRL systems therefore may not dim correctly; the original article expected fewer issues in low-beam DRL use, but exact-vehicle behavior remains unconfirmed.
Warranty and long-term testing
Coverage
Lumibright listed a three-year warranty, longer than the one-year coverage common when the review was published. That is manufacturer coverage rather than evidence of measured lifespan, and current support terms should be confirmed because the product is discontinued.
Long-term runtime testing is N/A in this review. The construction and short thermal result do not substitute for completed durability data.
Should you buy it?
The original Lumibright XT1 was an unusually complete performer for its time: exceptional reflector low and high beams, a 5 / 5 reflector pattern, top-tier projector low-beam output, realistic lumens, moderate power draw, and useful clocking adjustment.
The tradeoffs are its discontinued status, version 1.0 evidence, variable DRL behavior below 7 volts, unmeasured long-term lifespan, and the extra glare recorded in the separate fog-light test. The projector high beam was useful but less dominant than its low beam.
Existing owners can use this review to understand the recorded behavior of their kit. Anyone shopping now should compare current products and confirm exact-vehicle fitment rather than treating the historical rank as a current recommendation.
If this historical design still fits your needs, verify availability or compare current test results before deciding.
Full measurements and specifications
Open this reference for every recorded measurement, specification, unavailable field, and test-version detail. The main reflector and projector findings remain visible above.
Show all recorded measurements and specificationsFive groups · version 1.0 bench record
Measured output
- Reflector performance score
- 5.3 in the original version 1.0 record; 5.0 is the reference baseline, not a maximum
- Reflector low-beam hotspot
- 5,950 lux per bulb
- Reflector low-beam improvement
- About 3.7 times the recorded 1,610-lux halogen reference
- Reflector high-beam output
- 7,110 lux per bulb
- Reflector high-beam improvement
- 100% over the recorded 3,550-lux halogen reference
- Projector performance score
- N/A; no numeric score is preserved in the original review
- Projector low-beam hotspot
- 3,320 lux per bulb
- Projector low-beam improvement
- Nearly 3.8 times the recorded 876-lux halogen reference
- Projector high-beam output
- 5,000 lux per bulb
- Projector high-beam improvement
- About 1.5 times the recorded 3,200-lux halogen reference
- Measured lumens
- 6,060 lumens per kit; 3,030 lumens per bulb
- Lumen improvement
- 180 lumens per bulb above the 2,850-lumen manufacturer claim
Beam quality
- Reflector beam-pattern rating
- 5 / 5 in the original record; separate from the performance score
- Projector beam-pattern rating
- N/A; no numeric rating is preserved
- Reflector glare measurement
- No numeric headlight-housing value recorded; the original review noted no additional headlight glare
- Projector glare measurement
- N/A; no numeric value recorded
Power, color, and thermal behavior
- Measured color temperature
- 5,950K; manufacturer claim was 6,000K
- Measured electrical draw
- 25.1 watts per bulb
- Derived pair draw
- 50.2 watts per pair
- 30-minute running temperature
- 93°F / 34°C steady heat-sink temperature; the exact timing basis was not preserved
- Cold-start to 30-minute output drop
- Not recorded
- 2-minute to 30-minute output drop
- Not recorded
- Fan noise
- 65 dB on the bench; distance and in-cabin noise were not recorded
- Cooling method
- Active fan; lumen measurement was recorded after two minutes with passive bench cooling
Dimensions, features, and recorded compatibility
- Maximum bulb width
- 36 mm
- Base-to-rear dimension
- 38 mm
- Diode-handle dimension
- 41 mm
- Rotatable H7 collar
- Yes, in 10° increments; the reviewed bulb size was not identified as H7 on this page
- LED diodes
- Lumibright identified a top-tier Philips diode; the specific model was not independently verified
- Emitter layout
- Flat; 12 emitters total, six for each color
- Driver configuration
- External and removable; archived facts separately list a 47 x 28 x 12 mm heat-sink dimension
- Recorded product sizes
- Not listed in the preserved review
- CANBUS behavior
- Passed the original checks; not a compatibility guarantee for every vehicle
- Exact-vehicle fitment
- Unconfirmed; bulb type, seating, rear clearance, dust-cover space, and vehicle electronics still require verification
- Housing context
- Version 1.0 reflector and projector headlight references, photographed at 12 feet; a separate fog-light test recorded 705 lux, 133% improvement, and 78 lux of glare versus 18.5 lux for halogen
Warranty and test status
- Estimated price
- N/A; not recorded, and the discontinued XT1 is absent from the current product dataset
- Recorded warranty
- 3 years
- Long-term lifespan
- N/A; no completed durability result recorded
- DRL / high-beam dimming
- Recorded as supported, but the standard power line cut out at 7.0 volts or less; behavior is vehicle-specific
- Radio-frequency interference
- N/A; not recorded
- High-beam test photographs
- Not available for either reference housing
- Publication date
- August 31, 2019
- Last updated
- May 31, 2026
- Test version
- Version 1.0 historical bench record; not a current-chart product
Facts listed above are based on BulbFacts version 1.0 testing processes at the time of this review. See how we test for current procedures and use the current LED chart for modern product comparisons.