2009-2010 Ski-Doo REV-XP/XR 2 Stroke and REV-XR 1200 4-TEC Service Manual, Page 544Get this manual
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Section 07 CHASSIS Subsection 02 (REAR SUSPENSION )
GSx, GTX and MX Z
1 Both co upling blocks are identified "R" or "L" (right or left) and have position number (from to 4)At installation