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Mahle OE Pro Series moly ring set is a low-tension piston ring kit sized for a 4.125" bore, engineered to reduce friction while maintaining sealing for higher-rev and performance-oriented engines. The moly-faced rings offer durable wear characteristics under repeated cycles and are intended for rebuilds or performance replacements where reduced blow-by and controlled oil consumption are priorities in tuned engines.
Mahle Rings Pro Series Performance Ring Low Tension 4.125 Bore Moly Ring Set
