CYLINDER FULL KIT 83MM YAMAHA YZ 250 01-07, ATHENA P400485100012 290CC BIG BORE, (piston Included)

Athena Big Bore Cylinder Kit 290cc for Yamaha YZ/WRF 250

Upgrade your motorcycle'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 tools for design and testing to ensure optimal performance and reliability.

Key Features:

• Increased Displacement: Boost your engine's power with a larger bore diameter of 83mm, increasing displacement to 290cc.
• Durable Motor Nicksil Coating: The cylinder features Athena's proprietary Motor Nicksil coating, a nickel-silicon surface developed for superior smoothness and exceptional wear resistance.
• Enhanced Performance: Experience a noticeable increase in performance across the entire power curve while maintaining the reliability of original components.
• Complete Kit: This comprehensive kit includes a high-quality aluminum cylinder with an increased bore, a complete piston assembly (piston, pin, and rings), and all necessary gaskets for a straightforward installation.
• High-Temperature Resistance: All components are designed and validated to withstand extreme temperatures, pressures, and stresses, confirmed through rigorous bench and road testing.
• No Crankcase Modifications Required: Install this cylinder kit without needing to make any alterations to your engine's crankcase.

Technical Specifications:

• Bore Diameter: 83.00 mm
• Compression Ratio: 12.5:1
• Displacement: 290 cc
• Net Weight: 1.90 kg

Athena products are recognized globally for their performance, durability, and reliability. Please ensure that all Athena products are used in compliance with the specific national regulations of the country where they are marketed or sold.