I'm on my 3rd chain (don't buy JT sprocket x ring, it's shit) now and the sprockets are still in good shape... but at $14USD, it's nice to have that sprocket on hand for down the road since it may have a 1+ month turn around.
Edit, apparently they have recently added the front sprocket for $20 + shipping. Good thing, I found it odd that they didn't have a wear item like a front sprocket on their website for a bike that had been out for two years already.. but they had the rear sprocket lol
https://cscmotorcycles.com/countersh...rx4-100103847/