Shimano Ultegra 6600 10 Speed Cassette

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Top Features:

  • Hyperglide sprockets have a computer designed tooth configuration with contoured shift gates, result
  • Close ratio gearing allows a more efficient use of energy through finer cadence control
  • Three largest sprockets are mounted on a lightweight alloy carrier to reduce weight and increase ri
  • Sprockets are cut away and drilled to further reduce weight without reducing rigidity
  • Nickel-plated finish offers hard wearing resistance to corrosion
  • Chrome-plated steel cassette lockring
  • For Super Narrow 10-speed HG chains
  • Weight 235 g for 11 - 23T

Product Data

  • Cassette Range: 11-28 Tooth
  • Speed: 10 Speed
  • Road: Yes

Description

Optimised for use with hard-riding 10-speed road bikes, this quality-built cassette is mainly aimed at racing juniors and lower teeth. Equipped with Hyperglide sprockets, computer designed for specific configurations, a smooth and reliable shift is assured, even under extreme pressures and conditions.

Returns

We will happily refund any item purchased on Wiggle if returned to us within 365 days; excluding Wiggle gift vouchers, nutrition and customised products, except when faulty.

Please note: Bikes and other bulky items cannot be returned using our local returns service (where applicable). Please contact us and we can arrange to collect these from you using our discounted courier rates. There is a fee for all collections, except for faulty products.

Returned goods must be unused and supplied with their original packaging, unless the goods are faulty. Wiggle will pay the return postage costs for any faulty items.
More information on Wiggle's return policy

Customer Reviews

Shimano Ultegra 6600 10 Speed Cassette is rated 4.7 out of 5 by 59.
Rated 5 out of 5 by from Quality cassette in size required for youth racing Ultergra cassettes are great quality. Light and great they offer in these sizes for restricted youth road racing.
Date published: 2019-06-28
Rated 4 out of 5 by from Thanks to Wiggle's working principle, it has arrived without any problems. Product quality and long life.
Date published: 2018-11-06
Rated 5 out of 5 by from Excellent Shimano Quality?price Ratio For the money; great piece of kit. Always delivers excellent price/quality/performance ratio and at a bargain Wiggle price.
Date published: 2018-07-15
Rated 5 out of 5 by from Works great! Had to do a lot of searching to find this junior cassette. Finally found it here at Wiggle. It works great and the price was fair.
Date published: 2016-09-05
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Q & A

can you please tell me what the gear ratios are for the 16-27 ?

Asked by: Aph50
16,17,18,19,20,21,22,23,25,27 hope this helps .
Answered by: 5c0tty
Date published: 2016-03-02

will ultegra 6600 cassettes work fine w/ultegra 6700 group set?

will ultegra 6600 cassettes work fine with an ultegra 6700 group set including an ultegra 6700 chain?
Asked by: vensub
I can confirm that it would be compatible but I would advise replacing the chain at the same time as a cassette to prevent the chain from slipping. I hope this helps.
Answered by: WiggleWarby
Date published: 2013-10-23

Will this fit my bike?

I have a Giant TCR advanced 2 2009 model. I think it currently has an ultegra 6700 12t-25t cassette. Will the 6600 16t-27t fit on my bike?
Asked by: Sjeff
This is a 10 speed cassette, if you have 10 speed Shimano at the moment it will be fine.
Answered by: BigSi
Date published: 2013-10-23

I have a 105 11-25 cassette on my Trek and want to fit ultegra or dura-ace 12-27, will they both fit?

Asked by: Jenks020
Don't see why not. I upgraded from 105 cassette to ultegra cassette with no issues.
Answered by: Lloydie123
Date published: 2013-10-23

The Shimano Ultegra 6600 10 speed cassette 12-25 is listed as a discontinued line. What is a recommended suitable substitute?

Asked by: Dale1
Ultegra 6700 and is compatible - I've switched between them having 6600 on some wheels and 6700, 7800 and 7900 on other wheels.
Answered by: Beitzel
Date published: 2013-10-23

Does this cassette fit a 10 speed hub on Fulcrum 5's?

I ask because on a German web site it states it does not and only fits 8/9 speed hubs due to the ratios. I'd like to fit it to a set of 10 speed wheels.
Asked by: Ramsey
Yes it does, no adjustment needed
Answered by: Simon41
Date published: 2015-07-04

Cassette help

I'm on a Shimano Ultegra Compact with a standard fit 10 speed cassette. What are the benefits of changing the cassettes i.e ratios. What do the numbers mean? Do some offer easier gears for hills?
Asked by: cubster
when i used to run compact cranks & being not so fit the 12/27 ratio gives you the best of both worlds for climbing ie 27teeth & 12 that gives you a good high speed ratio but keep in mind with compact cranks even with this ratio you can run out of gears at about 50 kph approx but still fine though for pretty much everything recreational
Answered by: dizzy
Date published: 2013-10-23

Alternatives to Shimano Ultegra 6600 10sp 13-25 for Focus Mare Experts 2009

The Shimano Ultegra 6600 10 speed cassette 13-25 is listed as a discontinued line. What is a recommended suitable substitute?
Asked by: Shly
6700 ultegra
Answered by: Lloydie123
Date published: 2013-10-23

Is the cassette held together with pins or are the cogs separate?

Asked by: FelixB
Only the bottom smallest ring is a separate item. The rest of the rings are pinned with the top three rings on a alloy carrier.
Answered by: WiggleDean
Date published: 2013-10-23

What are the gear ratios for the 14-25 cassette

Asked by: cameraman13
I can confirm that the cog sizing is 14-15-16-17-18-19-20-21-23-25
Answered by: WiggleChris
Date published: 2016-10-27
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