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Home丂亜丂冇170 Round Single Headlight Conversion Kit for New Z400 & Z250 (19-) / ZX-4R & ZX-4RR (23-)



170 Round Single Headlight

Conversion Kit

for

New Z400仌Z250乮19-丂乯/

ZX-4R仌ZX-4RR乮23-丂乯


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By converting Kawasaki's new Z400/Z250 (2019 and later models) to a single round light,
Give it that tough, classic runner/streetfighter look.
Next-generation LED headlight kit that also meets Japanese vehicle inspections.
Other than processing the wiring, it can be attached easily.
A dedicated CNC machined meter stay is also included.






















The image above is
This is what it looks like when the low beam is on.

Important note about low beam:
Many people assume the lower part lights up for low beam, but on this projector-style unit,
the upper cutoff pattern illuminates for low beam.
Please double-check your wiring and installation orientation carefully.








Unlike traditional stamped-steel headlights,
this unit features a high-quality die-cast aluminum housing
with an integrated rear heat sink for excellent heat dissipation and cooling performance.




Approximate weight: 958 g.








The headlight uses an H4 connector.
An H4-to-bullet-terminal conversion harness is included.

Note: The black and white wires for the position lights require customer-side wiring modification.




The image above is included in the kit.
Convenient when unifying the ground cords of headlights and position lamps.
Y-shaped branch harness,
冇170 thin headlight H4 connector,
Convenient when connecting the connector cut from the normal headlight.
H4 connector conversion harness.




The image above is
To make it easier to attach the headlights,
This is a special meter stay developed by Bugbro.com.




This dedicated meter stay was designed by me personally
- someone who used to operate machining centers for a living.
We refused to use low-cost,
press-punched parts.
Instead, we partnered with a top-tier factory capable of high-precision work,
and every corner was carefully chamfered (C-surface) on a machining center.
The result is a beautifully finished component that reflects real attention to detail and pride in craftsmanship.
Of course,
this small-batch, high-quality approach makes it more expensive
- but we prioritized ownership satisfaction over keeping costs down.
The design shifts from the stock top-bridge-mounted meter stay to a headlight-mounted layout,
giving you much greater flexibility in positioning the headlight.




Above is
In order to increase the degree of freedom in the mounting position of the headlight,
From the normal top bridge mount meter stay,
Designed to change to headlight mount.
This is a meter stay that is attached to the headlight.




Like the headlight itself, the stay is fully machined from premium A2017 duralumin,
black anodized for increased hardness and corrosion resistance.




Stock meter stay: 372 g (steel)




Our dedicated stay: 68 g
(thanks to lightweight duralumin + aggressive weight reduction machining)




When installing the meter stay,
Because the yellow circle above the meter interferes slightly,
We apologize for the inconvenience, but
Please note that this part may need to be trimmed a little with a cutter.




The image above is
This is the state after removing the interfering part.




A special stay is attached to the meter.




The yellow circle part is
If the normal silver color is exposed, it will look uncool.
By attaching the included large black washer,
It is recommended to avoid exposing the silver color.




















When removing the included cap,
Using a utility knife blade is recommended.








The screws of the fork clamp facing inward,
When tightening with the headlights installed,
 We recommend using the "Piercing Ball Wrench (5mm x 6mm)" shown above.




仾 That's our BugBro.com-built Z400 streetfighter bike,
shown here with BugBro.com shop owner Yamaguchi.
This is the one I personally developed and I'm the one selling it.




black
Ground (-)
blue
High beam (15.1W 仺 22W: 2,098 lumens9)
yellow
Low beam (9.7W 仺 15W: 1,319 lumens)
white
Position lamp (4.6W 仺 5W)

Please refer to the table above for wiring.

仧The amount of light has increased due to minor changes from 2024! 仧








ZX-4R

Precautions when installing

It was not originally a naked car,
When installing on ZX-4R,
In addition to the need to cut the cowl that extends from the bottom of the tank to the front,
It is necessary to install a radiator reserve tank separately,
For example, by improving the handling of harnesses, etc.
A wide variety of
Please note that you may need to take additional measures.




The image above is
This is the cowl under the tank which is still normal.




The image above is
It is in a cut state.




When installing on ZX-4R,
Same as Z400/Z250,
The yellow circle in the image interferes with the stay, so
I would appreciate it if you could cut it with a cutter.




The image above has been removed.




When installing on ZX-25R and ZX-4R/RR,
仾,
Used in the Z400 meter,
"Color" and "Rubber Bush"
Please note that two of each are required separately.

By the way,
The product number is as below,
I would appreciate it if you could refer to it.

92027-1183 Color 2 pieces
92161-2102 Damper 10X20X12 2 pieces

Kawasaki parts search




The LCD meter for ZX-25R is attached to the meter stay.




The meter is attached to the headlight using a meter stay.









Bugbro.com stickers are also included as a gift!



Use this to prove your identity as a true streetfighter rider!



International Shipping







仛Get the sticker shown above (worth 480 yen) as a gift now! 仛


冇170 Round Single Headlight
Conversion Kit
for
New Z400 & Z250 (19-) /
ZX-4R & ZX-4RR (23-)
仧The amount of light has increased due to minor changes from 2024! 仧

仸Number of sales so far: 9 sets (冇41)
仸Number of sales so far: 3 sets (冇50)

Purchaser report [ZX-4RR]
Installation report [ZX-25R] (Part 3)
Installation report [ZX-25R] (Part 2)
Installation report [ZX-25R] (Part 1)
Purchaser report [Z400]
Installation report [Z400]


In the "Car model" pull-down of the shopping cart,
If you select a 2019 or later model Z400 or Z250,
Light stay for 冇41 is included.

Also,
If you select ZX-4R,
Light stay for 冇50 is included.






for STREETFIGHTERS
Join the BugEye Brotherhood
Japan's First Online Shop Specializing in Streetfighter Custom Parts
www.BugBro.com

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