Liners, pistons, piston rings kit for 425

This liners, pistons, piston rings kit is made for engines 425cm3 and fits on AZ and AZAM. It's Brétille quality.

• Compression : 7,5
• Diameter : Ø 66 mm
•  It's french made

 This liners, pistons, piston rings kit contains : 2 cylinders, 2 pistons, 4 piston rings, 2 piston axles, 4 c-clips.

How it works : The fuel-air mixture ignites and activates the piston which slides into the cylinder and compress the mixture. The spark plug produces a spark which causes the combustion : the hot gas exert a strong pressure on the piston and puches it back, creating the movement. Thermal energy is transformed into mechanical energy. As for the pistons rings, they prevent hot gases from escaping, ensure the tightness of the cylinder and scrape the oil to avoid leaving it on the walls of the liner.

Brétille (Aprotec) is one of the original equipment manufacturers. In 2004, APROTEC France take the brands Brétille Piston and France Piston brands and make custom manufacture of pistons, liners, piston rings and bearing for 2 and 4-stroke diesel, petrol or compressor combustion engines its principal activity. The brand is the keeper of the NP certification in ISO 9001 which is based on a guarantee of quality.