DetailsAthena cylinder set For over 10 years, Athena has been investing in the best and most modern technologies for the production of cylinders and their components, which are used not only by OE manufacturers, but also by the best racing teams in the world. Last but not least, the production of aluminum cylinders is constantly being improved thanks to the collaboration with the best Italian universities and the continuous further development requests from the best engine preparers. Thanks to a flexible production department, Athena can react efficiently to different situations (production batches from OE manufacturers, small quantities, construction of a prototype for stables). Athena cylinders are made with high quality aluminum alloys. They are manufactured using the latest technologies and coated with a nickel-silicon alloy. After all cylinders have passed stringent quality controls, they meet the highest standards in terms of reliability, durability and performance. Technical specifications: Cylinder material: aluminum Bore: 68 mm Stroke: 54 mm Displacement: 392 cc Compression: 6.5: 1 Headboard: included Maximum power at the crankshaft: 37.95 KW / 50.89 HP / 8,000 rpm