Highly accurate focusing of Hi/Lo LED H4 bulbs is not the easiest thing to achieve and that is primarily why there are no LED-kitted H4 setups as standard on new cars these days, despite the general push for low-consumption lighting overall. If you look carefully at a normal incandescent H4 bulb, you'll see that the filaments are very small and VERY accurately positioned within the bulb itself. It is this very precise placement that works with the shape of the headlight reflector to produce an accurately aligned cut-off and focus for the bulb. If you look at the pictures of the LED replacements used above, you'll see that the LED bars are much bigger then they should be to work properly, in my view.
I've tried many sets of LED H4s, each claiming to produce perfectly aligned cut-offs, but none until recently have produced the goods. But, I have found these Philips bulbs that use a tiny string of LEDs that pretty much exactly mimic the position and size of the incandescent filaments and they work MUCH better than the others I've tried. I run them in my Twizy and am very pleased with the results. Moreover, the base-plate is adjustable for angle and can be moved to achieve the best, non-blinding cut-off.
Not cheap, but as the saying goes, there's no such thing as a free lunch in this world and these have been designed and built properly I think and they were never going to be cheap. If I get the chance I will try to take pictures of the beam profile, so you can see the results.