shimano cassette cog - best bike prices - bicycle parts - road bikes - mtb - online bike stores

More product description:
The differences between the three models are in the length of the chain cage (the distance between the jockey pulley and the tension pulley) and in the length of the parallelogram. There are dozens of different cassette combinations available. The body will lift off, it is secured to the hub shell by the hollow bolt and a set of splines that keep it from rotating. (Formerly, you could get an 11 tooth threaded cog for Dura-Ace, but this has been discontinued. It is compatible with, and can be used on 7 speed XT, DX, and LX mountain hubs also the older 7 speed Dura-Ace, Ultegra, 105SC, and RX100 hubs. All of the cogs and the lock ring are bright Chrome plated to prevent them from rusting. With the chain sized as above, this Ultegra short cage derailer will wrap enough chain to run in the 3rd from the high gear (an 18) and the small ring (30). The only parts that are different in any important way between the 8- and 9- and 10-speed systems are the shift control levers.

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