Got 2nd set of aux lights for my KTM 250 Adventure: Why I chose HJG-21

The high beam spot has slightly different optics and is much weaker compared to the HJG-16 model.

BHPian advstreak recently shared this with other enthusiasts.

I am very satisfied with the highway performance of the HJG KZ-30 lights. However, due to the headlight being fixed on the ADV the spread from the H4 led projector bulb is not enough to cover the corner in twisties. This led to the wild hunt for the best possible second set of spread aux lights to aid the KZ-30 in hyper-spot mode.

There is this excellent video by Diode Dynamics explaining the major LED optics.

Video

From this video, one can see that forward-facing reflectors are not the best in terms of throw. They have a lot of light bleeds and don't have a sharp cut-off line. The answer to having a proper spread is to have projector optics.

Now ideally I would have wanted to light which has both spread and spot functions in one package. It is the HJG-16 model (231209 as per their Alibaba page)

www.alibaba.com/product-deta...67387728i2XuGI

This is the low beam spread pattern taken from the above website.

And here is the spot beam.

Here are some videos showing its real-world performance:

Video

Video

But the problem seems to be that this model does not seem to be in stock anywhere. I even contacted the Chinese people to help out. But it looks like HJG only produces whatever sells and as there might not be enough demand for this one they don't plan to make this further.

The other option is the HJG-12 model

www.alibaba.com/product-deta...67387728i2XuGI

But the low beam pattern brightness tapers off at the corner edges.

And the high beam spot is more of a spread rather than a spot.

This behavior can also be seen in the real-world video here:

Video

Hence decided to continue the search for the HJG-16 model. After a deeper dive, I was able to find something similar optics namely the HJG-21model

sarkkart.com/shop-2/riding-g...er-collection/

This model is also on the HJG Alibaba website with a rated power of 36 watts

alibaba.com/product-deta...6808609a8SDFO5

From a deeper dive, I was able to find a video where both HJG-16 and 22 models are shown.

Video

This confirmed that the low-beam optics are the same albeit with lower power. The high beam spot has slightly different optics and is much weaker compared to the HJG-16 model.

Anyway as this was the only option available I decided to place the order and upon receiving checked its power consumption. It consumes around 17.25 Watts if the low beam is on and if both low+high beams are turned on simultaneously then around 22 Watts.

This means these could be turned on using the Maddog harness which is already installed. The total power consumption will be 30+30+22+22=104 Watts. ( If the KZ-30 consumes 30 watts. It could be lower than that). The Maddog harness has a 10amp fuse so it should be able to do 120 watts. So this is exactly what I did. Here is how it looks post-installation.

Now coming to performance, this is how the H4 led projector bulb looks in total dark conditions.

One can see the frame edges are not illuminated very well.

This is how it looks with only the aux lights on and the headlight switched off.

The frame edges are illuminated much better with a proper cut-off line. The KZ-30 is also on and in spot mode.

Finally, this is how it looks when the headlight as well aux lights are on.

Now the next steps will be to head twisties in the night to check these out thoroughly and make any changes that are required.

During the last service, it was apparent that the cone set needed replacement. It was not done during the service due to lack of time. Finally got the time to get it done. The condition of the bearing was very bad and it's a good thing I did not push the replacement further.

After the clutch placement replacement, I noticed the clutch pull lever had become harder which could be due to newer springs. But I was getting the feeling that the clutch cable had also gone bad. When the cone set was being worked upon the damage to the cable as well the motouren neck brace was noticed and the clutch cable was promptly replaced.

The clutch lever torsion spring has also broken which was also replaced.

After fitting the new clutch cable the clutch cable pull has become much lighter. But I remember the 250 clutch pull to be even more lighter. I plan to do a pull test on another 250 as well as get the exact 250 clutch spring part numbers to see if they are the same as 390 or not.

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