ATHENA CYLINDER KIT 82MM HONDA CRF250R 04-09, 280cc BIG BORE, (piston included)

The Athena Big Bore Cylinder Kit increases the bore diameter to 82mm, providing a displacement of 280cc. Designed and engineered in Italy, the kit features a high-quality aluminum cylinder with a nickel-silicon coating for enhanced smoothness and wear resistance. It includes a complete piston kit, piston pin, rings, and all necessary gaskets. The kit is designed to withstand high temperatures and pressures while maintaining the reliability of the original components. No modifications to the engine crankcase are required for installation.

Features

• 82mm bore diameter, increasing displacement to 280cc
• Nickel-silicon coated aluminum cylinder for durability and smooth operation
• Includes a complete piston kit with piston pin and rings
• Comes with all necessary gaskets for installation
• Designed for high-temperature and high-pressure resistance
• No engine crankcase modifications required

Specifications

• Bore Diameter: 82.00mm
• Compression Ratio: 13.1:1
• Displacement: 280cc
• Net Weight: 1.90 kg

Cross-Reference OEM Part Numbers

• S4F08200003A – Piston Kit 81.95mm
• S4F08200003B – Piston Kit 81.96mm
• P400210160007 – Gaskets Kit
• S41316089 – Rings
• S41317040 – Piston Pin

Vehicle Fitments

• Honda CRE F R 250 (2004-2009)
• Honda CRE F X 250 (2004-2010)
• Honda CRF R 250 (2004-2009)
• Honda CRF X 250 (2004-2015)