I'm confused.

Does anyone know if the CBR900RR front caliper seals work in the 1991 MC21 front caliper?

The part number from NSR-World for the front brake caliper piston seals matches with 1993 CBR600F2 part numbers on the websites I've found; Ron Ayers and Honda Parts Nation. But the CBR600F2 calipers have two pistons of the same diameter and the calipers on my 1991 MC21 clearly have pistons of different diameter. Maybe it's just the incorrect diagram but both parts websites show the same thing. Also, the brake pads for the CBR600F2 are clearly different.

I know my MC21 uses the same brake pad as the CBR900RR and the early (1993) CBR900RR calipers bear a very close resemblance to the MC21 calipers, at least in the diagrams. It seems logical that the CBR900RR seals would work.

Thanks.

Skunkbait.