The Mahle plain ring set is a performance oil-ring assembly sized 4.760 inch with 2.0 mm thickness and .129in radial width, issued as an NHRA Pro Stock plain ring set. It supplies precision ring dimensions intended for high-demand racing builds where exact ring sizing and ring pack configuration are required for Pro Stock style engine applications.
Mahle Rings Performance Oil Ring Assy 4.760in x 2.0MM .129in RW GNS NHRA Pro Stock Plain Ring Set