ATHENA Big Bore Cylinder Kit P400210100060 468cc for Honda CRF 450
for HONDA CRF R, CRF RX
Check the compatibility with your motorcycle
FIND YOUR BIKE - compatibility table
The Big Bore cylinder kit of 468cc is specifically designed for the Honda CRF 450, offering a significant increase in engine performance. Made from high-quality aluminum, this kit is the result of over ten years of innovation and technological research, ensuring precise and reliable workmanship.
The cylinder sleeves are treated with a special blend of silicon carbide and nickel, ensuring exceptional durability and wear resistance. Thanks to an advanced manufacturing process, the cylinders are cast in steel molds and machined with CNC machines, allowing for thousandths tolerances at every stage.
The optimized design includes revised water channels to improve cooling capacity and perfectly flat surfaces for precise mating. With a bore of 98 mm and a stroke of 64.80 mm, this cylinder offers a compression ratio of 13.5:1, generating a maximum power of 57.3 HP at 9500 RPM.
- Bore: 98 mm
- Stroke: 64.80 mm
- Compression: 13.5:1
- Maximum power: 57.3 HP at 9500 RPM
- Material: High-quality aluminum
- Cylinder sleeve treatment: Blend of silicon carbide and nickel
- Manufacturing process: Cast in steel molds and machined with CNC machines
- Tolerances: Thousandths
- Optimized design: Revised water channels to improve cooling capacity
- Surfaces: Perfectly flat for precise mating






