Our premium replacement RIK Piston Rings for Mercury Marine / Mariner 2.5 Liter 2-Stroke V6 Outboards are engineered to meet the toughest demands of modern engines, providing superior durability and consistent, reliable performance.
Each piston ring benefits from advanced surface treatment technologies from RIK, enhancing wear resistance and maximizing longevity to keep your engine running smoothly and efficiently. Riken Corporation (RIK) is the world's industry leader specializing in piston rings and functional engine components.
With a proven reputation for producing the highest-quality piston rings that meet rigorous international standards, including QS9000 and ISO9002 certifications, you can trust our rings to deliver the reliability and performance your rebuilt engines demand.
Our 2MM ring sets exceed the Mercury / Quicksilver OEM specifications for the 2.5 Liter Mercury and Mariner 150-200 HP V6 outboards and V6 SportJet jet boat motors. Perfect to freshen up a hone and re-ring your motor.
Mercury 2.5 Liter BB150hp 1998-2005
Mercury 2.5L 150HP XR6 1993-2004
Mercury 2.5L 175HP XRI 1992-2005
Mercury 2.5L 175HP Carb 1992-2005
Mercury 2.5L 200HP Carb 1992-2005
Mercury 2.5L 200HP EFI 1992-2005
Mercury 2.5 L 200HP XRI 1992-2005
SportJet 2.5L 175 V6SportJet 2.5L 210 VP
Vertex V2500P, V2500S, V2515P, V2515S, V2530P, V2530S
Pro Marine
Includes a pair of two (2) RIK Rings. Select a quantity of six (6) sets to complete a full motor rebuild using the original Mercury OEM Pistons. Select your correct bore size at checkout: Standard Bore, Plus .015" Over Bore, Plus .030" Over Bore.
Mercury Outboard Part Number Cross Reference: 822321, 321, 200-20, 14940, 18-3982, 822321A12, 822321A8, 824905A12, 9-54225, 39-822321A12