The 1200 series boxers are getting older and older, but that does not mean they are not fun anymore! As time passes by, rubber parts on these bikes tend to get brittle and start losing their tension, like the drive shaft housing rubber protections, tire valve stems, etc.

This here is a repair kit for the clutch slave cylinder. The kit contains the seal and the circlip that holds the piston in place when the pump is removed from the gearbox(the cylinder body is not included!)

Just fit the new rubber, grease the pressure bearing and you should be good for 15+ years of riding that bike, over and over.

The OEM part number for the whole assembly is 21527724542, and it fits the following bikes:

K25 (R 1200 GS)   (12/2002 — 12/2012)

K25 (R 1200 GS Adventure)   (03/2005 — 07/2013)

K25 (HP)   (08/2004 — 11/2008)

K26 (R 900 RT, R 1200 RT)   (11/2003 — 06/2014)

K27 (R 1200 R)   (11/2005 — 07/2014)

K28 (R 1200 ST)   (05/2003 — 11/2007)

K29 (R 1200 S, HP2 Sport)   (11/2004 — 07/2010)

K21 (R nineT)   (01/2013 — 12/2019)

K22 (R nineT Pure)   (12/2015 — 12/2019)

K23 (R nineT Scrambler)   (09/2015 — 12/2019)

K32 (R nineT Racer)   (12/2015 — 07/2019)

K33 (R nineT Urban G/S)   (03/2016 — 12/2019)

The price is 42$, shipping included, worldwide!