The cogs (gears) at the front of your drive chain, connected to the cranks.

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What large chainrings are compatible with Shimano FC6603 crankset?

On my race bike I have a crankset FC6603. I want to replace my outer chain ring (My inner and middle chainrings are OK). But I cannot find an online store where they sell the outer chainring of this ...
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Chain vs seatstay with a 50T Chainring - BMX frame

I plan to put a 50T chainring on my bmx but I am afraid to have an interference between the chain and the frame. Does anybody know what is the critical distance between the seatstay and the chain so ...
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345 views

Low gearing setup for road bike with Shimano dual control

Question: What is my best bet for a crankset, given the following requirements for a road bike I am setting up: 68mm "English" thread bottom bracket Shimano STI "brifters", 2x10 (I already have ...
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710 views

Replacement crankset for Shimano SG B 52/39?

I have a very basic Specialized Allez (XL frame) street bike (pictured in my avatar) with a cheap SG B52/39 chainring needing replacement (warped and wearing out after two years of daily use). But ...