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This is a set of six (6) Buckshot Racing #77 replacement Mercury Racing 2.5 Liter Piston Kits for Mercury Thin Ring (1.5MM) applications.


These are cast pistons manufactured in the Americas (by a company with over 60 years of experience serving over 60 major OEM manufacturers) to OEM standards including 100% new and virgin Aluminum, silicon, nickel,  magnesium alloy, auto-thermal rings to control piston expansion, cooling channel, thermal treatment for solubilization, tinning, anodizing, graphitizing, and armor coating.


These replace the Pro Max / Sport Jet pistons running in steel sleeves as well as 245HP Carb, 260 EFI, and 280 HP ROS running Nikasil sleeves.


The piston kits include new wrist pins and circlips. The pistons are available in either standard or .015 bore sizes.


NOTE: These piston kits require you to have Mercury OEM 1.5MM Side-Pinned Rings.


1) Mercury Gold Rings for Nik or Steel Sleeves OEM part number 39-848200A12

2) Mercury Steel Sleeve Rings (Standard) 39-840684A12

3) Mercury Steel Sleeve Rings (Plus .015) 39-841139A12


We offer Mercury OEM rings for this piston. Contact for pricing and delivery.

6 Mercury 2.5 Pistons for 1.5MM Ring

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