Piaa 70856 H4 Xtreme White Antivibration 60/55 Watt = 110/100 Watt Bulb - Pair

I cannot say enough about the quality and brightness of these bulbs. Although they are more expensivethsn dom other options, you certainly get your value in what you pay for with these bulbs. I have used several sets in different vehicles so far, and know that I will purchase more as needed.

When my riding buddy told me that he could barely see my headlamp during the daytime, I started looking around for a replacement. The bulb being replaced was a 8 year old Hella H4, which I put in when upgrading the stock 55/65 watt unit. The difference in light intensity is profound. The new bulb lights up my entire 2 car garage like a halogen work lamp - it's blinding to look at. My new low beam is about as bright as my old high beam - no joke. I was hesitant to buy these due to the price, but I have to say that they are definitely worth it. Highly recommended.

These bulb put out clear white light, and they're a little brighter than stock, but functionally they're not significantly better than the stock bulb that came with my bikes. Luckily, I have two bikes that use the same bulb, so purchasing the two-pack made the price per bulb reasonable enough that I'm okay with them. If I had paid more I probably wouldn't see the value in the product. They're better, but for my dollar the price over a standard bulb doesn't reflect the improvement you'll get.

I bought these to replace the OEM H4 bulbs in my Harley Roadglide Ultra headlights. I had adjusted the headlights which helped some but changing out the bulbs for these made a night and day difference in brightness and visibility. I hope the "anti-vibration" is worth paying for - I'd like to get a couple years use out of these bulbs to feel like the price was worth it.

This is my second set. One of first set lost it's low beam after about 20,000 miles. Maybe this is normal for high powered lights ? I bought a used H4 bulb for my old 69' shaker Electra Glide. It was still working when I sold it 20 years later. The Piaa's are very bright and put out a very white light. A little pricey maybe.

Fit great, are a little brighter and I like the color temp better also. Not sure about longevity, but so far have 10 or so canyon hours and have hit some rough patches vibration wise at high speed, time will tell. I will update if something goes wrong with a timeline.

bulbs seem high quality but i didnt notice much, if any, difference. not worth the high price tag for sure. but otherwise the work good.

After looking in the shipping box, I didn't even bother to open the product itself. I've used these bulbs before, they are awesome, but unless/until amazon figures out that a product such as this should not just be tossed in a box that easily could hold 10+ of these, without ANY additional padding, I won't be getting my bulbs from this source. too bad...