Price Paid:
$140.00
at Shimano Center Favorite Ride:
uphill-sprints-mixed terrain Bike Setup:
Dura Ace, 3t, FSA-cranks, Ksyrium SLs, Wh-7800. Summary:
After switching from Dura Ace 9-speed to 10-speed components, I didn´t want to cut corners, so I spent my money all on genuine Dura Ace parts, for the name did hold true for the 9-speed and it does so for the 10-speed version of this cassette.
I´m surprised it lasts seeminlgy longer, than any 9-speed cassette before and I´ve done ´til now about 15K kilometers on it, many race kilometers, too, and it still shifts smoothly.
The chain had to be replaced two times, since and I´m deeply impressed, because I´m a little heavier than before and did succeed in sprints, more, and the cn-7700 didn´t last as long as the new chain, either.
Shimano holds word, if they say the durability has improved with that cassette, and I´m really keen on getting another one for the great longlasting performance without any issues.
But is this worth the price?-Seems so, to me, (un)fortunately for shimano.
No chain sucks, shifts more percisely, lasts longer.Top product! Strengths:
10-speed, smoother shifting, with less wear.
No chain-sucks for ~15K kilometers, which normally should already has happended by far.
i doesn´t semm to eat-op chains like mad, too.
Needde only two chains for the entire period. Weaknesses:
Price, if you can´t afford it, if you can, it´s no weakness, but a good investment,imho.
Some 20-50 grams heavier than the 9-speed. Similar Products Used:
Shimano Dura Ace cs-7700, 11-21; 11-23.
Simano 105 8-speed. 
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