2004 Polaris Pro X Factory Service Manual, Page 200Get this manual
REAR SUSPENSION Rear Track Shock Production Specifications
550 PRO Arvin RTS Shock PN 7042184
Rebound Stack .700 .012 .800 .012 .900 .008 1.00 .010 1.10 .012 1.25 .012 1.25 .015
Piston Orfice .070" Compression Stack 1.30 .008 .900 .008 1.25 .008 1.10 .008 1.00 .008 .900 .010 .800 .010