The cylinder has a diameter of 54mm, which can perfectly replace old or broken accessories parts. Made of high‑silicon aluminum alloy, it has a good thermal fit to the piston and reduces the weight of the whole machine. One‑piece molding increases the strength of the machine body, and improves corrosion resistance and high-temperature impact resistance. These parts have strong gas compression capabilities, provide surging power, and run stably without stalling. Specifications : Product Type : Carbon Cylinder kit Brand : Imported. Material : Carbon Colour : Silver Weight : 500 g Package Includes : 1x cylinder head 1x piston 1x piston pin 2x clips 2x rings