48mm Cylinder Piston Kit For Stihl 034 036 MS340 MS360 Chainsaw 1125 020 1206 With Pin Ring Circlip ( Without Decom. Port) from China manufacturer - Farmertec
Beginning the porting process : r/Chainsaw
Porting and Service | NewEnglandSaws
2 Stroke Engine Cylinder Mod and Porting Stihl 066 Chainsaw - YouTube