You’ve probably read all about the new Dura Ace 9200 and Ultegra 8100 groupsets. Mostly gushing reviews and podcasts have given us the perfect marketing hook.What do a couple of grumpy mechanics make of it though, (I’m sure you’ve been thinking) as flash is all well and good, when it's not in a pan.Now we know that Di2 is now over a decade in (it’ll never catch on said John) but are the strained supply lines and crumbling edifice of just in time economics now unable to support such a high tech product?
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