The best rectangular LED motorcycle headlight depends on your bike’s mounting style, dimensions, wiring, and intended look. The BOSYCY and FATECIM 6.5-by-3.5-inch lamps are aimed at bottom-mounted retro builds, while the Generic 4-by-6 lamp is presented for select XR models. The Z-OFFROAD unit is a 4-by-6 sealed-beam option, but its listed applications focus on trucks, so verify fitment carefully. Compare the key specifications below before choosing.
| Product | Best suited for | Key detail |
|---|---|---|
| BOSYCY Square Headlight With Visor | Retro bottom-mount builds | 25W high and 15W low beam |
| FATECIM Vintage Square Headlight | Buyers comparing electrical specifications | 10–60V DC and three-wire setup |
| Generic 4X6 Headlight | Riders checking XR-style applications | Sealed, dustproof, and waterproof design |
| BOSYCY Vintage LED Headlight | Classic custom-bike styling | 10mm bottom-mount screw |
| Z-OFFROAD 4×6 LED Headlights | 4×6 sealed-beam replacements | DOT/SAE compliance stated by manufacturer |
BOSYCY Square Headlight With Visor
This 6.5-by-3.5-inch chrome headlight combines a rectangular shape with a vintage visor trim. Its listed high beam is 25W and low beam is 15W. The product description identifies a 10mm mounting screw and describes it as suitable for bottom-mounted motorcycles, including choppers, bobbers, and several cruiser styles.
Best for: Riders building a retro-style motorcycle who want a square chrome lamp with separate high- and low-beam functions. It was selected because its dimensions, mounting approach, and beam wattages are specified.
Check before buying: Confirm the 10mm bottom-mount arrangement and available space on your bike. The listing does not provide a detailed wiring diagram or a voltage range.
FATECIM Vintage Square Headlight
The FATECIM lamp measures 6.5 by 3.5 inches and has a chrome metal housing, visor, and clear PC lens. The listing specifies 2,600 lumens at 25W for high beam and 1,600 lumens at 15W for low beam. It states a 10–60V DC range, a 10mm bottom-mount bolt, and three wires: black for negative, yellow for low beam, and red for high beam.
Best for: Buyers who want more electrical and wiring details before selecting a vintage-style rectangular headlight. The stated voltage range and wire assignments make this option easier to compare against a motorcycle’s electrical setup.
Check before buying: Verify the bike’s mounting dimensions and wiring requirements. The product description’s water- and dust-resistance language does not specify an IP rating.
Generic 4X6 Motorcycle Headlight
This black 4-by-6-inch rectangular lamp is described as a DRL headlight for XR250, XR400, and XR650 applications. The manufacturer lists a sealed construction intended to resist dust and water, along with wear-resistant materials and heat dissipation. The supplied details do not state beam wattage, lumen output, voltage, or connector type.
Best for: Riders seeking a 4-by-6 format and researching fitment for one of the listed XR models. Its weather-resistance and sealed-design claims make it a candidate to compare when those features matter.
Check before buying: The listing specifically advises checking product dimensions and compatibility before purchase. Confirm the exact mounting points and electrical connection; the model references alone do not establish fitment for every year or trim.
BOSYCY Vintage LED Headlight
This BOSYCY headlight has a 6.5-by-3.5-inch square design, chrome visor, and built-in LED lights. The listing says the LED is brighter than a standard H3 halogen bulb, but it does not provide a lumen figure or wattage. A 10mm mounting screw is specified, with suggested use on bottom-mounted choppers, bobbers, cafe racers, and other custom motorcycles.
Best for: Custom-bike owners who prioritize a vintage square appearance and want a built-in LED assembly. It offers a similar size and mounting style to the BOSYCY model above, so compare the listings for the specification details that matter to your build.
Check before buying: The description does not state a voltage range, beam output, or wire colors. Confirm those details with the seller if they are necessary for your installation.
Z-OFFROAD 4×6 LED Headlights
This two-piece 4-by-6 sealed-beam set is listed for truck applications, including Freightliner, Kenworth, Peterbilt, and Oldsmobile Cutlass models. The manufacturer states DOT/SAE compliance, IP67 waterproofing, anti-flicker circuitry, and a 6000–6500K color temperature. Each headlight is listed as 6.7 inches long, 4.33 inches wide, and 2.7 inches deep.
Best for: Buyers who need a rectangular 4-by-6 sealed-beam format and can independently confirm that the housing and electrical connections suit their motorcycle. Its dimensions and stated compliance make it distinct from the retro bottom-mount lamps.
Check before buying: The listed applications are vehicles rather than motorcycles. Do not assume it will fit a motorcycle just because the shape is rectangular; verify the opening, mounting, wiring, and applicable road-use requirements.
Buying Guide
What dimensions and mounting style should you check?
Measure the headlight opening and available depth, then compare them with the listed lamp dimensions. A 6.5-by-3.5-inch bottom-mount assembly is not automatically interchangeable with a 4-by-6 sealed-beam unit. Check the mounting bolt diameter, mounting direction, clearance, and whether your motorcycle uses a separate bracket.
Do you need high and low beams?
Look for explicit high- and low-beam information if both functions are required. The BOSYCY 6.5-by-3.5-inch model and FATECIM listing specify 25W high and 15W low beams. Other listings do not provide the same beam wattage details, so request clarification rather than assuming equivalent output.
How should you compare wiring and voltage?
Match the lamp’s stated voltage and wire functions to the motorcycle’s electrical system. FATECIM lists a 10–60V DC range and identifies its three wires. The other product descriptions provide less wiring information. Have a qualified installer confirm connections when the circuit details are unclear.
Does a weather-resistance claim prove road suitability?
No. Sealed, waterproof, or dust-resistant wording describes product claims, but it does not establish fit, beam aim, or compliance for a particular motorcycle. Check applicable requirements and the product’s documentation before using a replacement headlight on public roads.
Frequently Asked Questions
Will any rectangular LED headlight fit my motorcycle?
No. Dimensions, mounting points, wiring, voltage, and clearance vary. Confirm each against your motorcycle before ordering.
What does a 4×6 headlight measurement mean?
It refers to a rectangular headlight format, but listed outside dimensions and mounting requirements can differ. Check the specific product measurements and your existing opening.
Which listed option provides high and low beams?
The BOSYCY 6.5-by-3.5-inch model and the FATECIM headlight list separate high- and low-beam wattages.
Is the Z-OFFROAD headlight specifically listed for motorcycles?
No. Its listed applications focus on trucks and other vehicles. Motorcycle buyers should verify fitment and electrical suitability before considering it.
Does a brighter LED guarantee a better headlight?
No. Output claims do not confirm beam pattern, correct aim, fitment, or road-use compliance. Consider the complete specifications and installation requirements.