Topic starter
I’m looking at getting a new crank, Sram eagle gx, there are a few good deals kicking around, the bike has a 73mm bb shell and I believe I need a boost crank is that the 53mm gx crankset or 49mm ? Or can you have a non boost 53mm crankset and if so what’s the blinking difference? It’s making my brain hurt.
Posted : 23/11/2017 2:16 pm
For Sram cranks, the crankset is all the same, but the spider 9or direct mount ring) provides the offset to make it boost/non boost.
49mm would be non boost, 53mm boost - confusingly, SRAM also do 156mm and 168mm cranks, that refers to Q-factor (width between the pedals) of the cranks
Posted : 23/11/2017 2:26 pm
Topic starter
Many thanks for the clarity. Think the term ‘standardisation needed’ spring to mind.
Posted : 23/11/2017 2:56 pm
But those are the standards aren't they? 😉
Posted : 23/11/2017 3:11 pm
