Mark, 

We can't sell just the heads, so the clubs will need to be ordered fully assembled.

Cameron

1-888-TITLEIST 

I cannot imagine not installing the shafts of my choice! between warranty issues and just knowing everything is perfect that is the way to go! Besides, they have just about every shaft option one could want!

I like the testing they do on shafts to ensure their is consistency among the choices as well as perform well with their products.  Not all manufacturers do this much quality control...would never want to not have Titleist do the entire job for me!

Just my two cents... Cheers!