Today I went to replace my still original front sprocket on an Xchallenge.
The new one I had was ordered from Scheffelmeier and is a 16 tooth, but it wasn't as tight on the splines as the OEM one.
Call this paranoia, but after feeling how (even a used!) OEM sprocket sits on the shaft, I can't settle on anything less.
I'm sure it would be fine, but will probably order the 16 tooth from a Xmoto/Xcountry and see how it performs.
Do you guys feel the increased freeplay with non oem sprockets?
If not, is there a brand which also gives a very tight fit?