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This CP Pistons 1.2mm cast iron second ring is specified for a 4.000" bore and features a back cut, taper hook groove profile. Intended as a replacement second compression ring, it matches the listed Napier-style groove and bore dimensions for rebuilds or repairs. The ring's described profile and sizing make it suitable where this exact 4.000" bore, 1.2mm second ring specification is required.
CP 1.2mm Cast Iron Back Cut 2nd Ring 4.000 bore Taper Hook Groove (Napier)
