The bulbs say 51w on them. The highbeams are definately brighter than the originals, but I am not impressed with the low beams. There is a piece in front of the bulbs that blocks most of the light. I was going to do the relay mod, but with the factory wiring, I am already getting 14.2v at the bulbs when the engine is running, so I can't see it making much of a difference. I switched to silverstar bulbs in the low beams, hopefully it will help some. Wish I could figure out the running lights though. There are only two wires going to the bulbs. The high beams are used as the running lights.