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The Mahle Pro Series low-tension moly ring set for a 4.125-inch bore supplies a complete piston ring set intended for performance-oriented rebuilds. These low-tension rings are labeled as Pro Series and use moly face coatings as indicated in the description to reduce friction. The set is specified for a 4.125-inch bore and is presented as a performance ring option where low tension and moly faces are desired.
Mahle Rings Pro Series Performance Rings Low Tension 4.125 Bore Moly Ring Set
