Cassette - chain combination
In the info for the product it states that it works best with PC1090R, 1090, 1070 etc. However in stock you seem to only have 1091R, 1071 etc. Their description seems to indicate that it's not an issue but wanted to check. Also chains seem to come in different lengths. How do I know what number of links I need? I'm planning to buy a 12-28 and have a front compact chainset 50-36.