CYLINDER FULL KIT 100mm 05-14 HONDA CRF490CC ATHENA P400210100021 BIG BORE (PISTON INCLUDED)

Athena Big Bore Cylinder Kit - 100mm Bore, 490cc

Experience a significant boost in motorcycle performance with the Athena Big Bore Cylinder Kit. This comprehensive kit is engineered in Italy by Athena's dedicated research and development department, utilizing advanced design and testing tools for optimal results. The cylinder features a proprietary Athena motor-nicksil coating, a nickel-silicon composite that ensures both a smooth running surface and exceptional wear resistance.

Athena products are globally recognized for their superior performance, reliability, and durability. This Big Bore Kit is designed to deliver a noticeable increase in power across the entire rev range while maintaining the integrity and dependability of original components. The kit includes a high-quality aluminum cylinder with an increased bore, a complete piston assembly with piston pin and rings, and all necessary gaskets for installation.

Every component within this kit is built to withstand extreme temperatures, pressures, and stresses. Extensive bench and road testing by Athena technicians ensures that these parts meet the highest standards. A key benefit of this cylinder kit is that it can be installed without requiring any modifications to the engine crankcase.

Technical Specifications:

• Bore Diameter: 100.00 mm
• Bore Gain: +4 mm
• Compression Ratio: 12.0:1
• Displacement: 490 cc
• Net Weight: 1.90 Kg

Included Components:

• High-quality aluminum cylinder with increased bore
• Complete piston assembly
• Piston pin
• Piston rings
• All necessary gaskets

Please Note: All Athena products must be used in compliance with applicable national regulations. Athena is not responsible for any misuse of its products.