Athena 144cc Big Bore Cylinder Kit Yamaha

Athena cylinder kit For over 10 years, Athena has invested in the best and most modern cylinder and component manufacturing technologies, which are used not only by OE manufacturers, but also by the world's best racing teams. Finally, aluminum cylinder manufacturing is constantly improved through collaboration with the best Italian universities and the demands for permanent development from the best engine tuners. Thanks to a flexible production department, Athena is able to react effectively to different situations (OE manufacturer production batches, small quantities, prototype construction for a racing team). Athena cylinders are made from high-quality aluminum alloys. They are manufactured using the latest technologies and are coated with a nickel-silicon alloy. After undergoing strict quality controls, all cylinders meet the highest standards for reliability, longevity and performance. Features: - Special 3D software is capable of generating virtual simulations and mechanical stresses. - Aluminum cylinders are cast in steel molds and manufactured using CNC machines (tolerances to the thousandth can thus be guaranteed at all stages of manufacturing). - Revised water channels to increase capacity - Cylinder liners are composed of a special mixture of silicon carbide and nickel to ensure the best piston mileage as well as the best cylinder durability. - Tested at an interior temperature of about 20 degrees, for the best possible control of bores and cylinders - Cylinder surfaces are perfectly flat in order to eliminate any fitting imperfections Technical data: Cylinder material: aluminum Cooling type: water-cooled Bore: 58 mm Stroke: 54.5 mm Displacement: 144 cc Compression ratio: 14:1 Piston pin diameter: 15 mm Number of transfer ports: 6 Piston head shape: flat Number of piston rings: 1 Top ring thickness: 1 mm Piston ring type: chrome-plated Gasket material: Not supplied Exhaust port: two-piece Cylinder head: Included in delivery Maximum power at crankshaft: 37.6 HP / 11,200 Rpm.