NGK spark plugs are original equipment on BMW models.
 
Irudium spark plug.
 
Since 1936 NGK has lead the industry in technology, innovation and world class design of its entire product line. You can depend on NGK for quality and reliability. This is an OEM quality spark plug with consistent performance, copper core and triple-gasket sealing process. NGK plugs are the workhorses of smooth-running engines around the world.
 
Fits:

R1250GS
R1250Adventure
 
Part No: NGK-LMAR8AI-10 NGK