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This Mahle Pro Series moly ring set is an ultra low tension design for a 4.000-inch bore, supplied as a performance-oriented replacement ring set. The moly treatment and low-tension profile are specified for applications that require reduced friction and improved sealing at reduced ring pressure. Intended for engine rebuilds, the set supports higher-efficiency piston sealing while matching the stated bore size for correct fit.
Mahle Rings Pro Series Performance Rings Ultra Low Tension 4.000 Bore Moly Ring Set
