I just recieved my caliper piston repair kit from M and P which is supposed to be for a 1991 DT.
It appears to be 35mm wide as opposed to the 30mm that mine is which is confusing, even more so as the 3 other sellers i contacted on e### about their kits all say they are 35mm wide??
Also it came with a metal circlip so i am guessing this is for a later model bike???
Any ideas where i might find the correct piston as calliper is an original.
Post up some photos and let's have a look. Unfortunately 1991 is older than me. A lot can happen in that period. My bike doesn't have much in the way of original parts. Any other owner would have an absolute nightmare doing basic maintenance!