Looking back over MTB history, there seem to be loads of products or ideas that were must haves at the time, but haven't aged well in retrospect. For example, Flex-stems, Biopace, rattly disc drive wheels, Daves' Chain Devices, anodised everything.
What are your nominations for items or trends that are thoroughly de rigeur at the moment, yet in years to come will cause toes to curl when the long-suppressed memories are dredged up?
My nomination would have to be ultra-wide bars. I have some, and they feel great, but for a lot of riding they are plainly ridiculous. I can't even fit my bike through the door of my house any more. And they're white to boot…