[The_castle]

Can anyone confirm the standard sprocket sizes, front and rear for the 312R? I know the chain is a 525.
I think it's 15 teeth up front and 40 teeth for the rear sprocket, is that right?
Thanks in advance,
Dave.

 

[jaGraze]

I think 39T for the rear was stock

 

[The_castle]

I think 39T for the rear was stock

Thanks jaGraze, maybe they have two options as mine has Z40 stamped on the side. Anyone able to help with the front, is it a 15T?

 

[bartolim]

15 front/40 rear

 

[The_castle]

Thanks guys, I appreciate your help.
Dave.