Stihl OEM Piston & Cylinder Assembly (40mm) for Model 021 Chainsaws with Easy Start

OEM cylinder assembly from Stihl. Includes a piston, rings, piston pin, compression release plug, circlips and cylinder. Gaskets and compression valve are sold separately. We recommend using a piston ring clamp set when changing cylinders. This cylinder assembly has a compression release hole (Easy Start Version).