Just used for commutes and heavy training.
Easy to install worth the replacement of old cassette.
I changed my 11-28T Ultegra cassette for a 12-30T. I'm 61 and love to climb but gravity keeps getting stronger year by year) the 30T gave me one more gear for the 10% grades. No kidding, this cassette is worth it's weight in gold (although it's incredibly light. I'm an Ultegra guy all the way. Superb quality for great value.
I put this on my madone, just before my half ironman(quassy) with killer hills, and was very pleased, I am looking forward to how it will treat me at ironman lake placid!
I ride a triple, so I'm already that guy. My 12-27 wore out and I had to replace it, and Shimano doesn't offer that combination anymore, so I tried the new 12-30 wide cassette instead. It is truly like cheating to climb with. I hardly ever hit the low end of this range but it's really nice to know that, instead of one more sag gear there's like two or three of them, and if 30-30 isn't enough, just walk.
The downside is that the spacing between each cog is large enough that it's often hard to find just the right gear combination for a long slog into the wind. I still miss the 12-27, it was the perfect cassette. But the 12-30 lets me climb like i was 20 years younger, or at least fake it.
I'm 55 and I ride a lot - a lot of roads, a lot of miles, and an lot of hills. Riding 100 miles a week and 12-15 centuries a year, I need a lot of versatility - gearing for the long, flat straights and gearing for the long, slow climbs! This is my go to cassette! Paired with a standard 53-39 crank, it'll climb anything and still give me 45 mph downhills. Only cassette you'll need!
Bought new Mavic Ksyrium Elite's this year to replace another pr. and put on the CS-6700. Was riding with the CS-6600, so thought I would have to adjust everything for the new set up, but threw it on and works like a charm...no adjusting needed.
Great deal. Usual Shimano performance combined with a great price.
Works as designed.
Had a 105 12x27 and needed to replace so tried an upgrade to Ultegra and love the 28, as you can cruise more in the big ring when needed (like when you just don't quite want to shift to the 34T (compact) as you top over a roller hill.
Works very well with my sram red compact and shifters.
Save your knees and spin!
bought this for putting together a climbing set of wheels,larger cog
I use this for time trail great gearing no gaps in gearing where I need it
Not actually that much heavier than Dura Ace. A bargain in comparison considering the level of precision.
You can't beat the $$-weight-dependability value of the Shimano Ultegra CS-6700 10-Speed cassette. Rain, mud, sand, crud - you name it and the cassette always puts in a solid effort. The shifting is fast and precise and it allows one to cover all moves and situations with confidence.
I ran this with a 6600 chain, as recommended by Shimano with their 6703 triple up front. I've since switched to 7900 cassette and chain with the same crankset. I think it runs smoother and shifts better. For the price though, this is definitely better bang for the buck than the 7900 cassette.
