For the BMW R1200 LC liquid cooled series, I added the seal for the piston. Seals tend to leak from time to time, so swapping in a new one when also fitting a new clutch, is a good ideea 🙂

Attention, this only includes the seal, not the whole assembly(piston and cylinder)! Basically, the seal can start to leak, the piston and cylinder never touch and there is no need to replace them.