rotors are the same. calipers are different. the calipers is where all the ABS sensors/lines/etc. are located

 

hrm did not know that... i though the abs was controlled by the unit under the dash and sensors on the hub.
what about the pads though?
i know abs equipped cars come with larger pads....

 

you are correct.


however, the pads differ b/c the GSR, Si, EX all have different size pistons.

 

ok but ion every other case....the pads also match the rotor size
for example with a prelude vtec, v6 accord, legend, nsx, accord wagon, and type-r integra all equipped with 11 inch rotors they all have the same pads.
it seems odd that 9.4 inch rotors on a vx/cx/dx/hx would be be the same as the 10 inch ones found on on teh gsr, and abs ex's....unfortuneatley i only own a dx with 9.4 inch pads and i know those pads are not the same as teh 4dr ex abs sedan my gf has so im missing 1/3 of the pic :/