5)DiASil Cylinder contributing to reduced weight (first for a Yamaha a 2-cylinder engine)
Yamaha’s all-aluminum “DiASil Cylinder” is adopted to ensureexcellent heat dissipation. In addition to its good heat dissipationproperties, this cylinder also slows oil deterioration(consumption), maintains a more perfectly cylindrical shape thatreduces horsepower loss (enabled by the use of low-tension pistonrings) and other benefits.
[Reference] The DiASil Cylinder is an all-aluminum cylindermade possible by exclusive Yamaha casting technology. Thistechnology enables the casting of a cylinder from an aluminumalloy with 20% silicon content, which previously was consideredtoo difficult with conventional casting technology. The resultingDiASil Cylinder has the advantages of a cylinder wall with ahighly friction-resistant microstructure, excellent heat dissipationqualities, reduced weight and more. It is a proven technology used on many Yamaha scooter andcommuter models today. This is the first time it is adopted on a 2-cylinder engine.