I have used several 12 speed chains on 11 speed cassettes and chainrings - both double and narrow wide without any problems
They have all been shimano chains some deore and some 105
My understanding is that the inner width remains the same but the plate width is thinner, so should sit on 11 speed teeth fine
That was my understanding too, but it didn’t work. 🤷♂️
@andyp started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
I have used several 12 speed chains on 11 speed cassettes and chainrings - both double and narrow wide without any problems
They have all been shimano chains some deore and some 105
My understanding is that the inner width remains the same but the plate width is thinner, so should sit on 11 speed teeth fine