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Does anyone know if there are any 10 speed "pro-compact" Shimano (or Shimabo compatible) chainrings available? The 9000 Dura-Ace 11 speed has one but can't see a 10 speed. Many thanks!

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Flying Scot [918 posts] 2 years ago
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I'm 99.9% sure that Shimano 11 is the same as 10, unlike Campag, where 11 is designed for a narrower chain.

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Efe M. Balli [14 posts] 2 years ago
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Shimano doesn't do 52/36 chainrings for any of the 10 speed systems. You can get 34, 39, 50, 52, 53 tooth chainrings from Shimano.
SRAM does 52 and 36 for 110 BCD, if your crankset is also 110 BCD it will work. Shifting and crankset stiffness will suffer though.

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matthewn5 [748 posts] 2 years ago
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That's odd, I could have sworn I saw an Ultegra 6800 52-36 crank option somewhere. Must be imagining it!  7

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dave atkinson [6207 posts] 2 years ago
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there's certainly a 52/36 in ultegra 6800, but that's an 11spd groupset

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Flying Scot [918 posts] 2 years ago
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Flying Scot wrote:

I'm 99.9% sure that Shimano 11 is the same as 10, unlike Campag, where 11 is designed for a narrower chain.

Had a quick look, you would need to swap the whole chainset as they changed the BCD, so that's an expensive route!

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VecchioJo [396 posts] 2 years ago
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Praxis do a Pro Compact 110BCD - 52/36 chainring set, available from Upgrade Bikes

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bashthebox [751 posts] 2 years ago
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The Praxis ones match the curves of your Dura Ace rings, so that's nice.

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d_jp [126 posts] 2 years ago
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You can get FSA chain rings in 52 & 36 (110BCD) that are Shimano compatible.

ChainReactionCycles, UKBikeStore & Wiggle all do them (alphabetical order  3 ... as do others I'm sure, but those are the ones I can remember off hand).

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Col Nago [12 posts] 2 years ago
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many thanks everyone - will take a look at the options mentioned. As I am heading to Sardinia to race may well go full compact!