The Mercury Racing Short Trim Ram Cylinder Assembly 8M0050805 is the current OEM trim cylinder for Mercury Racing 12-inch mid-sections used on the S3000, SST-120, UIM F1H2O, and APBA US F1 outboards. This component directly replaces the earlier 44120 A5 trim cylinder assembly.
 
This trim cylinder is designed to operate within the hydraulic trim system, controlling the engine angle relative to the transom. On high-performance race mids, the short trim ram provides rapid and accurate movement, precise positioning under load, and reliable endurance through repeated full-stroke cycles.
 
The compact design fits within the 12-inch mid clamp bracket and interfaces with standard Mercury Racing pins, bushings, and hydraulic trim pump systems. The assembly features hardened rod construction, anodized housing, and OEM-specified seals to manage the hydraulic pressures typical in racing use.
 
Hydraulic ports and connection threads are unchanged from the 44120 A5 version, ensuring compatibility with existing trim pump manifolds, restrictors, and hose assemblies. Stroke length, pin-to-pin dimensions, and mounting geometry remain identical, allowing a direct swap with no modifications required.
 
Routine service procedures remain unchanged. Teams should inspect the cylinder rod, bushings, and pins regularly, bleed the hydraulic system for consistent response, and reseal the unit as needed during scheduled maintenance.
 
The 8M0050805 assembly is fully interchangeable with the 44120 A5 in all applications, with no performance or specification differences. In summary, the Mercury Racing Short Trim Ram Cylinder Assembly 8M0050805 is simply the updated OEM part number for the earlier 44120 A5 assembly.
 
Both serve the same role in Mercury Racing 12-inch mids used in S3000, SST-120, APBA US F1, and UIM F1H2O competition, with unchanged dimensions, function, and performance.
 
Special Order, contact Mike directly for delivery times.
 
For technical support, contact Mike Hill at +1-714-697-1716 or mike@buckshotracing77.com