2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 359Get this manual
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BRAKES REAR BRAKE DISC
Disc Thickness
= In mmBrake Disc Thickness: Service Limit: .170" (4.318 mm)
= In mmBrake Disc Thickness Variance: Service Limit: .002" (.051 mm)