Originally Posted by
shelbyfv
9 speed Dura Ace is 7700. 6600 is 10 speed Ultegra. No matter, you can use any Shimano 9 speed or 10 speed (road) with the exception of current Tiagra/4700. 7800 Dura Ace is the pick of the litter if you can find a nice one. Replace your chain as well.
And yeah, good call on replacing the chain...! 😆
seriously tho, should I stick with shimano on the chain? Or is there something more durable? There is this one short but very steep climb under the george washington bridge I ride quite often, which is where I broke it today...