any sprocket that will fit any of these bikes will fit the 2010 Z1000. They have the same bolt pattern for the cushion drive collars, and they run 525 chains.
2007 Kawasaki ZR1000B Z1000
2008 Kawasaki ZR1000B Z1000
2010 Kawasaki ZR1000D Z1000
2004 Kawasaki ZX1000C Ninja ZX-10R
2005 Kawasaki ZX1000C Ninja ZX-10R
2006 Kawasaki ZX1000D Ninja ZX-10R
1998 Kawasaki ZX600G Ninja ZX-6R
1999 Kawasaki ZX600G Ninja ZX-6R
2000 Kawasaki ZX600J Ninja ZX-6R
2001 Kawasaki ZX600J Ninja ZX-6R
2002 Kawasaki ZX600J Ninja ZX-6R
2005 Kawasaki ZX600J ZZ-R
2006 Kawasaki ZX600J ZZ-R
2003 Kawasaki ZX636B Ninja ZX-6R
2004 Kawasaki ZX636B Ninja ZX-6R
1996 Kawasaki ZX750N Ninja ZX-7RR
1997 Kawasaki ZX750N Ninja ZX-7RR
1996 Kawasaki ZX750P Ninja ZX-7R
1997 Kawasaki ZX750P Ninja ZX-7R
1998 Kawasaki ZX750P Ninja ZX-7R
1999 Kawasaki ZX750P Ninja ZX-7R
2000 Kawasaki ZX750P Ninja ZX-7R
2001 Kawasaki ZX750P Ninja ZX-7R
2002 Kawasaki ZX750P Ninja ZX-7R
2003 Kawasaki ZX750P Ninja ZX-7R