I just mounted a set of Hawk HPS pads made for the 05 RSX Base and it fit's perfectly.
The PN for the HPS is HB418F.646. Time to go find some Hawk Blue's for saturdays time attack.

 

Yep... the Fit uses 10.3 inch diameter front rotors. That's the same size used by the base RSX and some Civics also. I'm betting it's the same front brake setup.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JJDrivesAJazz &raquo;</TD></TR><TR><TD CLASS="quote">i just had a crazy idea of taking the front suspension apart, and mounting the rsx-base 5 lug hubs and remounting everything else</TD></TR></TABLE>

That probably wouldn't work. While the rotor and caliper seem to be the same as the base RSX, the hub, wheel bearing, and steering knuckle likely are not. At best, you'd need to press out the Fit's wheel bearings and hubs and press in the RSX parts, but that's assuming the bearing sizes are the same. They probably aren't because the RSX is a heavier car running larger and heavier wheels and tires.

Here's a picture of the Fit's steering knuckle: http://www.bernardiparts.com/S...4.GIF
The brake rotor mounts to part "2" and the rotor attaches to the hub on the bearing spinning in the big hole in "2". The actual part labeled "2" and the bearing inside is probably different from the corresponding parts on an RSX, however.

 

the rsx hub is larger then the fit hubs, and even if that wasnt the case, you would have to deal with the spacing between the bracket and rotor.