I've got SRAM Red 11 group on a bike I bought used. Now I want to fit 4 bolt cranks. Do I need chainrings compatible with Shimano road 11 speed? What's the thickness of the teeth? I don't know what the chain is but it shifts well so I assume it's 11 speed.
I've got SRAM Red 11 group on a bike I bought used. Now I want to fit 4 bolt cranks. Do I need chainrings compatible with Shimano road 11 speed? What's the thickness of the teeth? I don't know what the chain is but it shifts well so I assume it's 11 speed.