2008 Polaris Sportsman 500 EFI/X2/Touring/500 H.O. Service Manual, Page 65Get this manual
ENGINE Engine Service Data
CylinderPistonConnecting Rod
Cylinder Surface warpage limit (mating with cylinder .0020" (0.05 mm) head) Cylinder bore Taper limit Out of round limit Piston clearance Std Limit Boring Limit Piston Outer diameter Std Std 3.6221-3.6228" (92.00-92.02 mm) .0020" (0.05 mm) .0020" (0.05 mm) .0006-.0018" (0.015-0.045 mm) .0024" (0.060 mm) .020" (.5 mm) 3.6204-3.6215" (91.970-91.985mm)
EH50PLE
.0098" (.25 mm) OS 3.6304-3.6310" (92.21-92.23 mm) .0197" (.50 mm) OS 3.6403-3.6407" (92.46-92.47 mm) Standard inner diameter of piston pin bore .9055-.9057" (23.0-23.006 mm) Piston Pin Outer diameter .9053-.9055" (22.994-23.0 mm)