CYLINDER FULL KIT 81MM YAMAHA WR/YZ 250 14-18, ATHENA P400485100050 276CC BIG BORE, (Piston included)

Athena Big Bore Cylinder Kit - 276cc

This Athena Big Bore Cylinder Kit is engineered to enhance the performance of your motorcycle. Designed and tested in Italy, this kit features a precision-crafted aluminum cylinder with an increased bore diameter of 81mm, boosting the displacement to 276cc.

The cylinder is coated with Athena's proprietary Motor-Nicksil, a nickel-silicon coating that provides superior smoothness and exceptional wear resistance for increased longevity.

Key Features:

• Increased Displacement: Boosts engine capacity to 276cc for noticeable performance gains.
• Durable Coating: Features Motor-Nicksil coating for enhanced durability and wear resistance.
• Complete Kit: Includes a high-quality aluminum cylinder, a complete piston with pin and rings, and all necessary gaskets for a comprehensive upgrade.
• Reliability: Engineered to maintain the reliability of original components while improving performance.
• Engineered in Italy: Designed with extensive R&D and advanced tools.
• No Crankcase Modifications Required: Designed for direct installation without altering the engine crankcase.
• High-Quality Materials: Components are built to withstand extreme temperatures, pressures, and stresses, validated through rigorous testing.

Technical Specifications:

• Bore Diameter: 81.00 mm
• Compression Ratio: 13.6:1
• Displacement: 276 cc
• Weight: 1.38 Kg