Is a Shimano Ultegra Triple Chainset 9 or 10spd?

Have found a very well priced chainset but worried it wont be compatable with my current tiagra 9spd setup. It has 30,39,52 chainrings if this is relevant.
I have checked and it doesnt state 9 or 10spd.
Any help appreciated
I have checked and it doesnt state 9 or 10spd.
Any help appreciated
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Tiagra 4500 is 9 speed, but the 4600 series is 10 speed... many 2011 & 2012 bikes with Tiagra are 10speed now.
Although not definative, the 52/39/30 suggests a Ultegra 6600 chainset (as the 6500 chainset is only 52/42/30) so likely this is a 10speed set.
Also be careful its the same BB setup - some are compatible through the Tiagra/105/Ultegra range and some are not.
65xx series was 9-speed, 66xx and the current 67xx series are 10-speed.
Don't know if you can successfully run a 9-speed chain on 10-speed chainset, but it may well work.
Shimano Tech Docs is a good source of info.
Hmmm, would it be incompatable if it were 10spd againsy my 9spd set up
Officially it's not compatible. Does anyone have experience of running a 9-speed chain on a 10-speed chainset?
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http://www.merlincycles.co.uk/Bike+Shop ... t_1800.htm
Thanks for the help
Assuming the pic is correct (its a stock pic) with the grey finish its a 6604, but could be a 6603 with the silver finish, which is usually cheaper but still £75 is a bargain...
I can confirm an Ultegra SL 10 speed front triple works fine with a nine speed rear end (and a tiagra triple front derailleur).
I ran my bike this way for a few months before I could afford the Ultegra shifters and 10 speed block etc with no issues.
In fact, just ordered one....10% off too with their code...thanks OP, would have missed it otherwise.
Cannondale CAAD9
Kinesis Pro 5 cross bike
Lots of bits
Very cheap with the VIP reduction - got 2 for £130 or so!
If I may play Devil's Advocate, why then do manufacturers say that a chainset is 9 or 10 speed if the speed refers to the number of sprockets on the cassette and / or the chain width?
I'd imagine it's a marketing thing. They're trying to sell the whole group. The only thing that makes cassettes speed-specific, apart from obviously the number of sprockets, is the spacing. Chainring spacing doesn't change.
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Mine is sat in the box looking lovely. I couldnt resist and for the price its cheaper than a set of rings. I am planing on using the ultegra for summer use along with a new chain and cassette. That way when the bad weather comes along again i have an old setup ready to whack back on.