I have a set of new, front DC5R calipers, which I intend to install onto my DC2 GS-R. There are several nuances to deal with: the directionality of the calipers requires that the bleeders mount on the bottom and different rotors are needed. Otherwise, these calipers will bolt onto the stock mounts. Bleeding can be achieved by dismounting the calipers and inserting a block of wood.

The real question is the rotors. I compare the stock and the required dimensions below:
Stock Required
Diameter (mm) 262 300
Rotor Height (mm) 45 40
Rotor Thickness (mm) 21 25
Center Bore (mm) 64 64
Hat diameter (mm) 152 190 or less

My rotor reference dimensions come from here:
http://www.dba.com.au/dba_cata...a.pdf

It seems that the rotors from the S2000 have all of the correct dimensions with the exception of the center bore (70mm) and bolt circle (5 x 114.5mm). Does anyone know of a rotor with S2000 dimensions and a 4 x 100mm bolt circle? Thanks!

 

There probably isn't one

The reason people convert to 5 lug is for exactly the predicament your in.

 

JHPUSA.com had a full ITR DC5 suspension set with front and rear brembro calipers i thought it would be tight as hell if someone put them on a dc2. but prolly requries alot of customization.

 

Buy the S2000 rotors and have a machine shop drill them to 4x100.

 

I'd consider redrilling an aluminum hat from a floating assembly. However, redrilling a cast iron rotor is insane. I don't want to switch to the 5-bolt pattern because I really like my Mugen MF-8 rims.

Thanks!

-D