61ST2 RC Engine Replacement Piston YSS8106 by YS Engine  [YSS8106]

Service piston for nitro RC models

The YS Engine piston with model number YSS8106 is presented here as a replacement part associated with the 61ST2 reference in the product title. It is intended for use when rebuilding or repairing engines that require a direct piston swap and is not promoted as a performance-enhancing item.

When maintaining nitro RC motors, the piston ensures correct compression and combustion chamber sealing. Before fitting, inspect the cylinder bore, piston skirt and ring condition thoroughly for any scoring or wear that could impair sealing. Fit the piston with care to protect ring alignment and avoid introducing contaminants into the cylinder.

Installation guidance: use appropriate engine service methods, assemble on a clean work area, and carry out a measured break-in or verification run after installation to ensure compression and smooth running. Check fitment of YSS8106 against your engine documentation for the 61ST2 reference prior to purchase.

A practical replacement piston for hobbyists restoring engine compression and reliable operation during routine engine servicing.