Stock Brake Disc size

[Redlined]

Maybe I'm an idiot but the search didn't work for me, either that or no one has asked before which I doubt. What is the size of the stock rotors on an RS? Looking to upgrade to a bigger break kit but wondering the stock size and any other necessary information. Thanx
Mike

[Gro Harlem]

9.3" ventilated disc-brakes

[Redlined]

ok thanx! so on ebay some of the discs are 10 1/4" so with that disc would it be bolt on and could I install my stock calipers directly back on the disc or would I need a new mount or caliper?

[ryanlindenberg]

you would need a custom mounting bracket/adapter.

[Yoda]

Originally posted by Gro Harlem:
9.3" ventilated disc-brakes

The rears are 9.3" The front depends on the year the early MX-3 RS & GS (up to '93) used the 10.125" ('90-'92) 323 H/B front rotors. When the 323 front rotors were enlarged to 10.25" the MX-3 was also upgraded in production to the larger rotors several months later. Although never used on cars sold outside Japan there was a limited number of (Familia/323H/B) that were sold with 11.2" front rotors and 10" rears