02-08-13, 07:09 PM
Wider lip goes on the inside of the caliper, if you put your finger in and scrape outwards you should feel a lip. If you put them in the other way round the fluid will just push past the seal and escape. Delboy does a good rebuild here and explains it well. Delboy's Garage, Motorcycle Front Brake Caliper rebuild Part 1.
Eagles may soar, but weasels don't get sucked into jet engines...