If the cylinder no longer works properly, it may not be necessary to replace the complete cylinder. In many cases it is sufficient to replace the piston including piston rings and clips or the cylinder head. ... Pistons are among the most heavily stressed wearing parts of an engine and must be replaced from time to time when doing regular maintenance work. We have a huge selection of spare and tuning cylinder heads to increase engine performance, and brands like Stage6 and Malossi also make separate combustion chamber inserts for the head. Pistons are available as spare parts for original cylinders and as replacement pistons for cylinders of many brands like Stage6, Malossi or Bidalot. The pistons are usually sold complete with piston pin, piston rings and circlips, the individual components are sometimes also available separately. No matter if 2- / 4-stroke scooter, moped, 50cc bike or Vespa, our shop has the spare part you need.