Here are some places to look for bolts.
www.buykawasaki.com - they list bolt sizes
http://www.pro-bolt-canada.com
What's the list stock bolts for the Sprocket/Slave, Clutch Cover, Pulse Cover, etc ...
Right Side:
(92151) Part # 92151-1130 BOLT,6X25 (Qty 6)
(92151H) Part # 92151-1202 BOLT 6X40 (Qty 4)
(92151B) Part # 92151-1132 BOLT,6X55 (Qty 2)
Left Side:
(92151) Part # 92151-1130 BOLT,6X25 (Qty 1)
(92151C) Part # 92151-1134 BOLT 6X30 (Qty 7)
(92151D) Part # 92151-1135 BOLT,6X35 (Qty 2)
(92151A) Part # 92151-1131 BOLT 6X40 (Qty 2)
(92151E) Part # 92151-1199 BOLT 6X65 (Qty 1)
Left side:
M6 x 25mm: 1
M6 x 30mm: 7
M6 x 35mm: 2
M6 x 40mm: 2
M6 x 65mm: 1
Right side:
M6 x 25mm: 6
M6 x 40mm: 4
M6 x 55mm: 2