The holy grail…

In the search for mad big and numerous gears this is the king: SRAM Dual Drive.

It is a internal 3 speed hub with the capacity to accept an 8 or 9 speed cassete for a total max of 27 gears. When added with a standard triple on the crank you get 81 gears!

Now if they only made a hammershmidt with a double or triple on it.

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