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To replace the piston on the TM Racing 125, loosen the screws securing the side panels of the bike to access the internal components. Here, you will find the cylinder, which must be removed by loosening its bolts. Inside the cylinder, you will find the piston, which can be detached from the connecting rod by removing the retaining ring. The new piston can then be placed onto the connecting rod and secured with the appropriate ring. After installing the new piston, reassemble the cylinder and the side panels of the bike.

Updated on 19 June 2026 by ScegliAuto

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