Athena cylinder kit For over 10 years, Athena invested in the best and most modern technologies for the production of cylinders and their components, which are not only used by OE manufacturers but also the best racing teams in the world. The production of aluminum cylinders will last, but not least, working with the best Italian universities, as well as for the further permanent development demands the best constantly improved engine tuner. Due to a flexible production department, Athena can respond effectively to different situations (production batches of OE manufacturers, small quantities, construction of a prototype for stables). Athena Thermal are made of high quality aluminum alloys. They are products based on the latest technologies and coated with a nickel-silicon alloy. After all cylinders have passed the rigorous quality control, to meet the highest standards in reliability, durability and performance. arcuate piston Number of segments: 1 Top segment thickness: 1mm Segment type: chrome Diaphragm material: Carbon Socket: 1 x Oval Head: Not included