Piston Rings We need 660 piston ring sets with 4.751 Bore. The rings should be for gas powered 4 cylinder tractor engine with 2 compression rings, nodular iron and 1, 3 piece oil ring. Would you have some rings available in that size. Also need 220 sets 4.716" bore size. Please let us know if you have availability of these ring sizes. Please Advise as soon as possible. PO Box 413, Las Vegas, Nevada, United States Contact Person: Mr. Marv Wachendorf Telephone: 1-210-852-2223