The Mahle plain ring set is a performance steel Napier second-ring kit sized for a 3.4252-inch bore with a 1.2 mm section (.135in RW) as listed. Intended for engine rebuilds and ring replacement, this plain ring set supplies matching rings for specified applications. It provides a straightforward component for machinists and shops replacing worn second rings during engine overhaul.
Mahle Rings Performance Steel Napier 2nd Ring 3.4252in x 1.2MM .135in RW Plain Ring Set