ATHENA Cylinder Kit P400485100038 105cc for Yamaha YZ 85

The 105cc cylinder kit is specifically designed for the Yamaha YZ 85, offering high performance and unparalleled reliability. This engine assembly is the result of over ten years of innovation and research in the field, with a particular focus on utilizing the latest manufacturing technologies. Made from high-quality aluminum alloy, the cylinder is coated with a special nickel-silicon alloy, ensuring superior strength and long durability.

Thanks to a cutting-edge production process, each cylinder is created using CNC machines, which ensure micron tolerances at every stage of processing. The water channels have been optimized to improve cooling capacity, while the cylinder liners, made with an innovative blend of silicone and nickel, provide excellent piston mileage and increased durability.

With a bore of 53 mm and a stroke of 47.8 mm, this cylinder achieves a displacement of 105 cc and a compression ratio of 13.8:1. It is designed to deliver a maximum power of 21.8 HP at 10,887 rpm and a torque of 14.8 Nm at 8,680 rpm, ensuring exciting and responsive performance. The piston head has a wide shape and the number of segments is 1 mm, while the pin diameter is 14 mm.

• Bore: 53 mm
• Stroke: 47.8 mm
• Displacement: 105 cc
• Compression ratio: 13.8:1
• Maximum power: 21.8 HP at 10,887 rpm
• Torque: 14.8 Nm at 8,680 rpm
• Cylinder material: high-quality aluminum alloy
• Coating: nickel-silicon alloy
• Production process: CNC machines
• Water channels optimized for cooling
• Cylinder liners: innovative blend of silicone and nickel
• Pin diameter: 14 mm
• Piston head segment number: 1 mm