I rebuilt my front caliper (1990 DT125R) last year and have just come to do the rear today as part of a very long and ongoing restoration project!

However, the rear caliper has obviously been replaced with a front DT125R caliper as it has the larger piston and the circlip...so I was just wondering if anyone had come across this before? I'm assuming it won't be problematic as it worked OK prior to me taking the bike to bits.

Maybe a previous owner thought a bigger piston would be an upgrade on the rear brake?! It's just annoying as I had purchased the genuine rebuild kit and now can't use it!

Jimmy