23,8XX on my '93 Kawasaki ZR1100. I know it's original as the cycle never left "work" ( Original owner, VP and myself )
I scored a brand new OEM kawasaki chain for $100 off ebay ( retail is $311.53 ) and brand new sprockets off a friend for $65
I read the manual and how it's replaced on my ZR1100 is to remove the swingarm ( and mufflers )
Jeff