- Shimano Ultegra 6800 11-Speed Cassette
zoom Shimano Ultegra 6800 11-Speed Cassette
Shimano Ultegra 6800 11-Speed Cassette
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The Ultegra 6800 11 speed cassette is the new offering from Shimano enabling you to use wider ratios. The lightweight HG-EV cassette has rigid alloy sprocket carrier for reduced weight and better shifting performance, even under demanding gear changes.
Top Features of the Shimano Ultegra 6800 11-Speed Cassette
- For use with HG-EV chains
- Rigid alloy sprocket carrier
- Improved teeth shaping providing accurate shifting and reduced wear
- 'Rider tuned' wider gearing options with 11-speed
- 11-23T; 11-25T; 12-25T; 11-28T; 11-32T
The Hyperglide EV sprockets have been designed to reduce weight with improve teeth shaping providing accurate shifting and reduced wear and the wide gear range meets the demands of all types of rider.
About Cassettes & Freewheels
Cassettes and freewheels for bikes are a cluster of sprockets in a range of sizes offering a multitude of gear ratios. The difference between the two is, a cassette slots onto the freehub, which has the ratchet built in and is then secured with a lockring, whereas a freewheel is a cluster of sprockets built around a ratchet and threads directly on to the hub. Cassettes and freewheels come in many ratios, close ratio is when the number of teeth increase in small increments of 1 or 2 at a time, whereas a wide ratio is when the teeth increase in larger increments of 3 or 4 at a time. Most systems will use a cassette hub as these allow for a wider bearing spacing and increased axle life, you can also fit a larger quantity of sprockets onto a cassette hub with 11 speed systems now becoming available. With cassettes you must use the appropriate spacing for your gear levers and rear mech, Shimano and Campagnolo are not interchangeable so you will need to match the cassette to your levers for smooth and precise shifting. Sram and Shimano chains and cassettes will work together as they use the same spacing.
About the Shimano brand
Shimano are the makers of the world's most well known cycle component brand. Established in 1921 when the first cycle freewheel was forged. Shimano produce drivetrains, wheels, pedals, shoes, cycling clothing and pretty much every Shimano cycle accessory you can think of! Famous for their top end products ridden by the pro's, Dura-Ace and XTR, which cover both road and MTB's. At Shimano, they're doing everything they can to respond to heightened environmental concerns. Shimano are proud to be a producer of bicycle components that help people to enjoy outdoor sports and interact with nature through healthy non-polluting activities. In their 87 plus years of existence Shimano have accumulated a wealth of technology and product development and expertise that serves as the driving force behind their continually evolving product line.
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Product Q & A
Ask your questions and share your answers.
could you please give me the sprocket sizes of the 11-28 and the 11-32 please. Also what is the weight difference between the Ultegra & Dura-Ace?
With regards to the weight, the Dura Ace 9000 cassette in 11-28 tooth options should weigh around 192 g with Ultegra 6800 in the same option 212 g approximately 20 g more.
Is it possible to remove the 10-Speed Freehub body and install an 11-Speed Freehub body? So that an 11-32T cassette can be fitted.
If so,does the cage need to be changed,and a longer chain fitted?
I don't believe you can run a cassette any higher than the 11-28t on di2 though.
Note: any sprocket with more than 28t will need a MEDIUM rear derailleur. The medium cage is designed to give more clearance between the jockey wheel and the sprocket. Currently there is no Dura Ace version but the Ultegra is so good it was used by Pros at the Giro d' Italia. See the item below.
But if you decide to buy an 11-32 Cassette, then remember that you need a rear derailleur with a long cage!
Else it will not work:
Hope that answers your question.
What is required for the front derailleur and shifters?
I have a flat bar so what shifters would I require?
A new rear derailleur would be required along with a new front derailleur.
You would also need 11 speed shifters which are sadly not currently available in a flat bar set up.
So only the long cage RD derailleur is compatible with an 11-32 Cassette. Hope that answer your question.
The spread will be more even on 12-25
You will loose the high gear the 11 gives you but apart from that everything will work fine.
You will also need to make sure your front and rear derailleurs are 11-speed.
Note: Shimano short cage [SS] rear derailleurs can cope with a 28t as cassette. If you want to run a larger rear cassette with say 32t then you will need to have a MEDIUM CAGE derailleur. This longer cage allows the jockey wheel to clear the larger ring on the cassette.
Ultegra is a superb choice and at Wiggle prices and service you cannot lose.
Enjoy and stay safe.
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