1st gen 250r front rotor diameter help

[oldskool83]

Hello,

I am looking for a small rotor to use on machine and wondered if anyone knows the diameter of the front rotor? I have rears and fronts from other years but this one it tiny and i think will work for project.

LMK please

[big specht]

270588
I machined the inside out and redrilled a I think 300ex or 400ex frt rotor to use on a first gen R with cart wheels cause the oem one was to big dia. If I remember I can measure a first gen frt rotor tonight

[HairyJR]

Just measured my '82 front disc, 6-3/32" (@ 157m ) OD 2" (@ 52m ) ID bore. '81 isn't a drilled disc like the '82.

270590

"HJ" 270589 :beer

[oldskool83]

Sweet, i think this will work on my project, now so check different caliper heights. Thanks so much!