Not sure if they are any better performing than the ones they replaced or what the difference is. The ones that were replaced moved smoothly and held the topper door open, but allowed the topper door to close smoothly all the way. These should be direct replacements, but they seem to depress the door about 3/4 to fully open and resist the door fully closing (I have to depress the door about 2-3 inches to fully close, almost like the posts are a bit long when fully retracted, but they are the same length as the old ones in both the fully retracted and fully extended positions.)
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