pitch

Ordering a 43T rear sprocket. Bike is standard, AFAIK. So assuming it will be 520?

Hi fellas, I have recently bought some renthal sprockets from Tash. I have changed the gearing 15/ 42 ratio. Can any tell me what length of chain I would need for these sprocket sizes, ie how many links that would be if I bought a new one and also what the pitch size of chain I need for my...

wats the difference between 520-525? in sprockets?? does it refer to the pitch of the teeth or something?? and if so wats the difference of having a 520 over a 525? or visversa?

Very handy for calculating thread pitches http://www.boltdepot.com/Fastener-Information/Printable-Tools/US-and-Metric-Thread-Sizes.pdf :thumbup:thumbup

I want to change my front sprocket to a 15T from 16T but I gather that I will need to buy the correct sprocket for my chain pitch. I don't know the pitch of my chain but will there be some sort of markings on it to tell me? From what I've read 525 pitch chains seem to be the most common fitment?