2003 Polaris Deep Snow Snowmobiles Service Manual, Page 166Get this manual
DRIVEDRIVEN CLUTCHES LETTER AND NUMBERED DESIGNATION WEIGHTS
M1 (Modified) Gram Weight: 46 PN 5630301
06 Gram Weight: 50 PN 5630243
05 Gram Weight: 53.5 PN 5630234
15 Gram Weight: 55.5 PN 5630274