2005 Ski-Doo Racing Handbook, Page 295Get this manual
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SECTION 06DRIVE SYSTEM
417 126 740 417 126 741 417 126 722 417 126 725
27 27 27 27 27 27 27 27
53-50 Anod53-47 Anod50-40 47-40 44-40 40-44 44-47 47-50