Originally Posted by
BlazingPedals
Are we talking about 5-bolt crank arms? Not sure what BCD is used on current Shimano proprietary 4-bolt arms. Although I'm sure that many people here can educate me.
The OP
very specifically asked about Shimano 7800. 130 BCD Shimano 7800. If it's 7800 it has to be 5 arm. Only takes about .27 seconds to figure this out if you don't already know. /education.