Suzuki GSR600 Service Manual page 113

 Crank pin O.D.
Code
1
2
3
 09900-20202: Micrometer (25 – 50 mm)
 Bearing thickness
Color C (Part No.)
Yellow
(12164-29G00-0D0)
Brown
(12164-29G00-0C0)
Black
(12164-29G00-0B0)
Green
(12164-29G00-0A0)

The bearings must be replaced as a set.
O.D. specification
30.992 – 31.000 mm
30.984 – 30.992 mm
30.976 – 30.984 mm
Thickness
1.492 – 1.496 mm
1.488 – 1.492 mm
1.484 – 1.488 mm
1.480 – 1.484 mm
ENGINE 3-61