This set includes six (6) Buckshot Racing #77 Super Sport Piston Kits engineered for the Mercury 2.5 Liter Pro Stock and River Racing applications. Each piston is designed specifically for Mercury Super Sport high-performance outboards, featuring a higher ring land for increased compression and a 1.5mm thin ring configuration optimized for Mercury Super Sport race specifications. These pistons are ideal for competitive racing setups where precision, strength, and consistent performance are critical.
 
Manufactured in the Americas by a company with over six decades of experience supplying more than 60 major OEM manufacturers, these cast race pistons meet and exceed OEM standards. Production uses 100% new virgin aluminum alloy blended with silicon, nickel, and magnesium for optimal strength and thermal stability.
 
Additional features include auto-thermal rings to manage piston expansion under racing conditions, precision cooling channels, full thermal treatment for solubilization, and advanced surface enhancements including tinning, anodizing, graphitizing, and armor coating. Each step is executed to ensure maximum durability and efficiency in Mercury 2.5L racing engines.
 
Every Super Sport Piston Kit contains six (6) coated pistons in your choice of bore size, twelve (12) 1.5mm thin rings for steel bore applications, six (6) slip-fit wrist pins, and twelve (12) CirClips. An upgrade to race-lightened slip-fit wrist pins is available at checkout for an additional $200, providing reduced reciprocating mass for even quicker engine response.
 
Available at check-out in three (3) bore sizes: Standard Bore, Plus .015 Bore, and .030 Bore, ensuring compatibility with common Mercury 2.5L rebuild and performance configurations.
 
These piston kits are also compatible with the following Mercury OEM rings: Mercury Gold Rings for Nikasil or Steel Sleeves (PN 39-848200A12), Mercury Steel Sleeve Rings Standard (PN 39-840684A12), and Mercury Steel Sleeve Rings Plus .015 (PN 39-841139A12).
 
Mercury Racing Gold Ring Piston Kits are available for Nik motors. Call Mike for RaceNet Pricing.
 
By combining precision engineering, proven metallurgy, and exacting manufacturing processes, the Buckshot Racing #77 Super Sport Piston Kits deliver the reliability and performance demanded in high-RPM Mercury 2.5L Pro Stock and River Racing environments.
 
Contact Mike Hill at +1-714-697-1716 or email mike@buckshotracing77.com for technical support.