ATHENA Cylinder Kit 072400 70cc
for YAMAHA, KTM, BENELLI, APRILIA, MBK, BETAMOTOR, ITALJET, MALAGUTI
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The 70cc cylinder kit is designed to deliver high performance and reliability over time. Made from high-quality aluminum alloys, this cylinder is the result of advanced technologies and a rigorous manufacturing process. Each component has been tested to ensure maximum precision and durability, with tolerances of one thousandth of a millimeter thanks to the use of CNC machines.
The structure of the cylinder features optimized water channels to enhance cooling capacity, while the sleeves are made with a special blend of silicone carbide and nickel, ensuring excellent piston operation and a long life for the cylinder itself. The completely flat surfaces eliminate any mounting inaccuracies, ensuring a hassle-free installation.
With a bore of 47.6 mm and a stroke of 39.2 mm, this cylinder achieves a displacement of 69.8 cc and a compression ratio of 13.5:1, making it ideal for those seeking power and responsiveness. The kit also includes the cylinder head, completing a perfect package to enhance your engine's performance.
Technical specifications:
- Cylinder material: Aluminum
- Cooling type: Water
- Bore: 47.6 mm
- Stroke: 39.2 mm
- Displacement: 69.8 cc
- Compression ratio: 13.5:1
- Piston pin diameter: 10 mm
- Number of transfer ports: 5
- Piston crown shape: Dome
- Number of piston rings: 1
- Thickness of the top piston ring: 1 mm
- Type of piston ring: Chrome-plated
- Diaphragm material: Carbon
- Exhaust: 1 x oval
- Cylinder head: Included in the supply
This kit represents an excellent choice for those looking to enhance their motorcycle, combining cutting-edge technology and superior performance.










