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New front derailleur chain guide design to reduce chain drops
Hollow glide chain rings 11 speed compatible
Made in Japan
Borrowing 9000 Dura-Ace technologies, the Ultegra 6800 crankset now has Optimum Power Transfer 4-arm design.
Most Helpful Customer Reviews
A definite improvement over the previous model in that the shift from the smaller chainring to the larger one is extremely smooth; it's almost as if you have to look down at the chainwheel to see if the shift occurred. I went for the increase in size from 52/36 to 53/39 because 52 teeth just wasn't hacking it when I wanted to increase my speed downhill and on those rare occasions when I was being blown down the road by a 30 MPH wind and wanted to see what I could do ;>). Of course, the fit and finish is typically superb for Shimano components.
I upgraded to Shimano Ultegra crankset after I demolished the Oval brand that came with my bike. What I like: the hollow tech design, the finish, the Amazon price, the trusted Ultegra name. I don't really know if this makes me ride faster but in the 8 months that I've had this, it does seem so. Highly recommend it...or go for Dura Ace.
The new ultegra cranks are made by a process that I guess is not all that new but new to me: forged parts joined with glue to make a really solid hollow structure that is super light. I bought these to switch from standard size chain rings to compact.
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