YSS8106 Piston - Spare for 61ST2 RC Nitro Engines by YS Engine  [YSS8106]

Replacement piston for nitro model engines

The YS Engine piston carrying model code YSS8106 is listed here as a spare part, with the 61ST2 reference used in the product title. It is intended for engine rebuilds or repairs where the original piston must be replaced, and is marketed as a technical replacement part rather than an upgrade item.

In nitro RC engines the piston is critical to maintaining compression and reliable combustion. Before installation, inspect the cylinder and rings for wear or scoring that could compromise sealing. Take care when fitting to maintain ring alignment and prevent debris from entering the bore during assembly.

Installation advice: follow standard engine servicing procedures, assemble on a clean bench, and conduct a careful break-in or test run after fitting to confirm compression and smooth running. Confirm the YSS8106 matches your specific 61ST2 engine reference before ordering.

A reliable service piston option for hobbyists carrying out engine rebuilds or replacing worn components to restore normal operation.