7. CYLINDER/PISTON STRYKER 125/150 Measure the piston pin hole I.D. Service Limit: 15.06mm replace if over Measure the piston pin O.D. Service Limit: 14.99mm replace if below Measure the piston O.D. Take measurement at 10mm from the bottom and 90° to the piston pin hole. Service Limit: 150cc: 61.81mm replace if below 125cc: 56.30mm replace if below Measure the piston-to-piston pin clearance. Service Limit: 0.02mm replace if over 7-5