Hi Randomerrandomer!
Any idea on tooth count?Colour?
And welcome to the forum by the way,hope you have a great experience,has worked well for me!Has been challenging to the bank balance though,but all worth it.
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Those look a little post 98 to me.Apologies for my ignorance,is narrow wide a 10/11 speed thing?
The shifting ramps are the machined cut-outs on the back of the 36t ring (2nd pic),some Shimano rings also have the shorter teeth in certain positions to coincide with the ramps to aid shifting.These teeth are all the same profile.
The 36t has 5 shift ramps (different style to those pictured) the others have none.Not sure if you're looking for something a little more modern than I have?
No wonder I'm confused!Witchcraft!!Get him out of here!! I'm assuming those chainrings are designed for the chain not to move off them,older ones are the opposite (triple front).I'm sure you'll find someone more educated in the post 98 section.Surprised they haven't tried to lynch you yet for that kind of talk round these parts!Good luck anyway.