Hi dear, Just to open the thread because of unexpectable nightmare of seized pins on front brakes. It can cause low performance of stopping(especialy for GS with ABS) the brake pad can stuck/fall while driving, so advice is to service the whole brakes, not only the pads! On every 20000 - 30000, seal the pins and following rubber on brakes with brembo silicon grease for brake pins(it is appropriate for this, because of temperature resistant so grease could not find the way to the pads trough high temperatures). Because of hard finding parts(there is no BMW part number for sliding PINs)the shortcut is to go in closest HONDA dealer and ask for sliding pins for CB 500 bike, it is the same parts(metal and finish made in Japan). Part numbers for pins: 45131-166-016(abou 3$), 45131-HA5-672(about 10$). If you have damaged rubbers for pins, Part number for Brembo set rubbers with silicone grease is: 06439MAK003(about 12$). There is pictures of parts in attach. So i hope that somebody will read the post and find the parts on one place. I was not so lucky, so there was a lot of digging the internet and few days without bike!!!