I threw these plates in my 06 yz450f, which probably didn't completely need plates, and I could tell a difference right away. They grab very nicely. I only have a couple rides on these plates so I can't comment on durability. They took about 30 minutes of mx style on the throttle constant speed shift riding to break in. Not a huge upgrade from stock and I haven't tried the cheaper plates but I can say that I do t regret paying the extra money for the Hinson product.