Hello im going to go for a 2.o zetec with bike tbs on. Does it matter which ones you use are r1 tbs ok?

Depends whether you intend to respace them. Not all bike TBs are individual.

If not re-spacing then most 750cc+ bike TBs should be fine.

can the r1 tbs be re-spaced or are they fixed? i suppose it would be easier to able to re-space them?

Depends on the year of the bike.

Ones like this can:



And like this can't: