[racket] Splitting Racket source code by scope?

I'd like to split the components of my Racket project into multiple  
files according to this structure:

contents of file1:

(letrec ((id1 body1)
          ...
          <contents of file2, see below>
          ...
         )
    (main execution body using id1, idx, idy...)
)


contents of file2:

          (idx bodyx)
          (idy bodyy)


...

is that possible, and if yes how? I would probably have to define a  
global syntax rule in file1, load file1 in file2 and then wrap the  
definitions in file2 into the defined rule, or is there another way?

Thanks!