INCREDIBLE. BREAK. STRENGTH. MOVES. YOUR. eyeballs. OUT. OUT. YOU. SOCKETS. They grip HARD, even when it's cold, and predictably better when it's warm. I have tried EBC Red Stuff and Green Stuff and they are by far the best. Second best green material. Red Stuff is pure junk (useless like any ceramic pad; in fact I've never found ceramic pads that hold up well; but they're less dusty; IMHO, ceramic = don't worry). Yellow Stuff is comparable to (and maybe slightly better than) Hawk HP+ in terms of stopping power, except Yellow Stuff has a much better cold bite, which is important where I live. No hard pressing of the pedal is required either - they don't tire your foot in traffic; they also modulate very well. They seem to gather as much dust as HP+, which isn't trivial. But I don't mind cleaning my wheels more often in exchange for ELITE LEVEL stopping power! I LOVE THIS BOOT! I WILL BUY AGAIN AND AGAIN. THANK YOU EBC FOR THE YELLOW MATERIAL! IT HIT EVERYTHING ELSE! KEEP YOUR EYES! UPDATE: 12/31/18 . The pads now fit perfectly and are still amazing! The cold bite (temperature here is 30-40 F) is just AMAZING. There is a first bite. MARVELOUS. The car stops for a dime, ANYTIME. The warmer they get, the STRONGER they grab. It's hard to make them go away. Dust really isn't that bad, comparable to OEM. HIGHLY RECOMMEND THIS! Next time I'm planning to try Blue Stuff, which according to the reviews I've read is even better (is it even possible?). If that's true, I'll be an EBC fan for life!