WTB tz125 rear brake rotor

looking for a rotor for an early 90s tz125 any condition just not cracked, 3 hole.

 

I believe the TZ250 rear rotor is the same for the '94 and up TZ125.

 

The early 4JT TZ125 rear disc has a 4DP prefix, and the last of the 4JT's has a 4TW prefix. All the same three hole mounting. TZ125 rear wheels have the same disc brake mounting even between the three and four hole sprocket mounting differences.

 

Whats the O.D. on the rotor? I have a couple sizes 3 bolt.

 

A quick measurement gives me a bit over 7-1/4"...which jives with the service manual's statement of 185mm.

 

I think Honda RS125/NSR250 rear discs are also 185-186mm. I wonder if they all have the same three hole bolt diameter.