That looks like the one I put on the GS500 I'm restoring.   Its bright !   Your has two little rounds on one side where mine has one round on each side and to flats.  

Hmmm. 4 or 5 weeks. Only 50 bucks. Sounds like a cheap Chinese knockoff of the real deal. I really don't think having DOT stamped on it means much. Is the return address on the package the "Sum Phlung Dung manufacturing company?

Springman/MM:

Glad you are willing to explore the potential for affordable lighting.  I do worry about the claimed reliability and performance of the cheap stuff that is made in China (vs. the better quality stuff made in China).....not all of it is equal.  I fear that a lot of the claims about 20,000 hours and 10,000 lumens are "fake claims"......a lot of those claims are likely based on the claims of other manufacturers.  If Cree claims their LED's last 20,000 hours, then other folks make the similar claim.  I have read that the light output and life are only really accurate in a test facility where the light is kept cool - once stuck in a headlight bucket the numbers really don't mean much.  I recently had my first LED fail after 2 years of use in my car.....it is likely a result of the underhood temperatures in our 90 degree summers.

Badwolf got a very good Daymaker knock off - I am not sure what model/manufacturer he got....it is very bright and has been reliable for him.

On most of the really good Daymaker style lights I have seen - the back of the housing is pretty deep it may not fit into some motorcycle housings.  The JEEP folks in our area seem to be buying a lot of very bright lights.....not sure if they are expensive or affordable.

I do wonder about the failure of the Daymaker style of light.  If you are riding with a conventional style light - generally just one filament burns out and you can still make it home.  This has also been my experience with the only LED failure I had - the low beam burned out but the high beam still worked.  With this style of light it is easy to keep a spare bulb in your toolkit.....or you can buy a replacement bulb almost anywhere.  With the Daymaker style.....does only the high or low beam burn out at a time....or does everything go out?

I was replacing the Funky Triangle looking thing that came with the bike.   So , the replacement came with a bucket and fork clamps and the light combo.   Its OK , but is Bright/Dim --- not Hi/Lo .  I fussed at the seller for not disclosing  that fact before selling it and I left them really Rotten Feed-Back along with a warning in the Reviews section.    

I bought that bike to sell , so , the light should last as long as I need it ?  

As of now I need to get $1,000 for it to get anything for my time.

Springman:

Pull your bike up to a flat wall....about 30' feet away, then switch between low/high beam.  That will allow you to see if there is a vertical cut off on the low beam, and when you switch to high beam the shape of the light pattern on the wall should change, and the vertical cut off of light should go away, and more light will shine on the wall (more light....not just a brighter light in the same pattern).

Is the light pattern even....or are there bright and dim areas?

I did the proper aiming. I got 25' from the wall, measured the height to the center of the headlight, marked the wall 2" lower than the height of the headlight and set the low beam at that height (very definite cutoff). Then when I turn on the high beams the light does go above the low beam cut off, but it is very dim and does not project very far. Not happy with it.  on the final adjustment (which I feel gives me the best illumination) I actually aimed the low beam cut off about equal with the headlight height, or about 2 inches higher than it should have been.

I have corresponded with seller, and they are going to refund about 80% of the purchase price. I agreed as I can still use the bucket (I hope) for a better daymaker headlight.