SHIMANOCS-6700 Ultegra Bicycle Cassette (10-Speed)

I got this cassette as a long overdue upgrade for my road bike (had 12 years of frequent riding on my original drivetrain, so I got new cassette, chain rings, chain). I’m super happy with this cassette. The quality is excellent - very sturdy build yet still relatively light weight. And the proof is in the riding: my bike shifts like a dream!

Cassette was as expected for Ultegra level quality. I was trying to decide between XT 10-32 cassette and this Ultegra 10-30 cassette. I am replacing an older Dura Ace 10-27 cassette. Looking for additional lower gear range. Dura Ace is super light. The XT was the heavier than the Ultegra. Decided to stay with Ultegra since I have Ultegra road group. Did not disappoint. Flawless shifting and smooth transition gear to gear. You will need cassette chain whip and cassette locking tool to remove and install the new cassette. Otherwise is very easy to install.

Works great, legit Shimano.

Here's a scenario: You go down to your LBS and pick up a bike off the shelf. "Wow, this is a great deal!" They tell you its a 105 bike and you are super excited to get a bike with great kit for a great price. You get the bike home and go for a few rides then a few weeks later start looking through specs to find out how you can make the rig faster (without training harder) Your local bike shop probably didn't bother giving you a full run down of every component so you go bike them on the Makers website and then you have this epiphany! "This isn't a full 105 bike or Ultegra (or what have you)" The brakes are actually a cheap Tektro variant, the crankset is probably something by FSA and the cassette in likely Tiagra.Now you know why your bike was so well priced. If you're smart you take the FSA crank off right away and post it on Ebay. hopefully you get $40-$50 and that can be plopped down for a new Ultegra crank that is super stiff and provides instant response. After that you tackle the rear Cassette and the jump from that Heavy Tiagra to Ultegra is immense.This Ultegra Cassette is fantastic. If you live where there are hills (10-15 degrees and up), you'll love this cassette. you'll be the guy laughing on group rides when your buddies on their fast racing bike with 11-21 cassettes or 12-23 cassettes are killing themselves out for the saddle crawling up big hills while you sit down and enjoy a nice casual stroll up the hill.

I bought a repackaged item and it missed two cogs in the package. I contacted Movatik and they were very nice to send a complete replacement although I only asked for the missing cogs to be sent. They were very responsive too. Good job Movatik!

The cassette had obviously been installed previously and then loosely put back into the torn box and resold. The sloppy repackaging and a smudge of dirty grease in one spot was evidence of this. Otherwise the cassette was spotless with no apparent wear. I'm guessing a previous customer test fitted this 12-30 cassette and decided to send it back. I am satisfied with the purchase, but the condition of the product on arrival was enough to arouse suspicion.

A pretty easy install if you have all the tools to do it. This cassette went on easily, and now my chain isn't slipping as it was before. I shouldn't have waited as long as I did to swap it out.

2009 SRAM Force short cage derailleur is recommended to work with a max 28 tooth cassette but this 12/30 Shimano cassette works great once the B-screw is adjusted to fit the 30.