I am rebuilding 2012 R6 calipers with new pistons and seals. It looks like the dust seal has a very slight flare on one side. Anyone know if that flare should be on the fluid side or the pad side of the piston? Thanks
In the "Lip-side" pic you can see a bit of a crease that follows the curvature of the seal, that crease is the start of the flare that angles towards the camera. It's hard to see unless you look closely with good light.