Purchased to replace the 35/35w H4 halogen bulb in a Kawasaki Z125. This is a quick install. The low beam is comparable to the standard low beam, maybe a bit brighter. But the high beam is only a few degrees higher, not bright enough. Due to the design, the emitters are only in the upper half, so only the upper half of the reflector body lights up, looks weird (see photos in other reviews). Those with left and right emitters, with low beam "shields", have a better design. I found the AUTOONE H4 (B08BC4G48W) bulb to be slightly better than this one, at least in terms of high beam projection (although it has slightly more power). I tested the Cyclops Adventure Sports H4 (borrowed from a friend on the bike). and it was definitely in a whole different league, but $80.
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