This is a Piston Kit so included in the kit is:

1 x Piston 1 x Gudgeon Pin 2 x C-Clips

Only thing not included is Small End Bearing

It is a genuine Scorpa item so fits all Scorpa and Sherco trials bikes, Sherco from 1999-2022 (not 2010 cabes and 2014-2015 Factory) and will also fit Scorpa from 2011-2022

This piston kit is also suitable for all 300cc GasGas, TRS and Vertigo as the use the same piston OEM