CYLINDER FULL KIT 68MM YAMAHA YFZ 350 87-06, ATHENA P400485100024 392CC BIG BORE, (Pistons included)

Athena Big Bore Cylinder Kit - 68mm Bore, 392cc

Upgrade your engine's performance with the Athena Big Bore Cylinder Kit. This high-quality kit is engineered in Italy by Athena's dedicated R&D department, utilizing advanced design and testing tools to ensure optimal performance and reliability. The cylinders feature a durable motor-nicksil coating, a proprietary nickel-silicon blend developed by Athena for superior smoothness and wear resistance.

Athena's Big Bore Kits are globally recognized for their exceptional performance, longevity, and dependability. This kit is designed to significantly increase engine power across the entire RPM range while maintaining the reliability of original components.

• Increases displacement to 392cc with a 68mm bore diameter.
• Features two high-quality aluminum cylinders with an increased bore and galvanic coating.
• Includes a cylinder head with two interchangeable central domes.
• Complete piston kit with piston pin and rings is included.
• Comes with all necessary gaskets for installation.
• Constructed to withstand extreme temperatures, pressures, and stresses, validated through rigorous bench and road testing.
• Designed for installation without requiring modifications to the engine crankcase.
• Compression Ratio: 11.9:1
• Net Weight: 1.23 Kg

Please ensure all Athena products are used in accordance with national regulations of the marketing or sales territory.