Shimano/Sram Inter-compatable?

[Bizkit031]

When it comes to the cassette and chainrings, they don't (except the very low end jobs ie below acera)

The pickup points are the same. Profiles the same. Spacing the same. Only thing that's different is the material and machining, to reduce weight.

When it comes to the derailleurs, shifters and brakes it's a different story. Bearings vs bushings, replaceable vs pressfit pivot bolts and higher spec springs, metal vs plastic in the inner workings (sometimes) as well as weight savings on certain non critical areas and then of course lower tolerances. Which means a higher input cost due to more accurate machining practices.

But cassettes and rings? Nah. Go for deore or pc1150 etc. No difference in performance between that and xt etc.

tYea that's why I was asking the question, but the workings are the same from the bottom up,the lower end stuff mechanically does not have a different way of working