A-tech has belly and alternative side fairing kits. A-tech quality is not great when it comes to precision. I replaced the head fairing right side "dummy" intake with their kit, and fitment is quite out.
Magical Racing i've used them on my prev zx10r and now the belly, hugger and tail tidy for H2. Carbon Fiber is thin and light, and mounts are very accurate. But they have a long waiting time though.