I got a set of sprokets from the PO with the bike when i bought it. I checked online for info on them and it looks like the front sprocket is the wrong pitch. The front was a vortex brand chromoly 16T 520 part# 3270-16. I am not going to use a 520 ever. I have a new 525 renthal o-ring chain. the rear sprocket is a black anodized 41T 525 pitch..........Se attached pic of rear sprocket. I don't know what brand this is, but i think this is the correct pitch for what i need. Anyone know what brand this is? Or any info on this sprocket?