ATHENA Big Bore Cylinder Kit P400270100004 290cc for Ktm EXC-F
for KTM EXC F 4T, SX F 4T, XCF W 4T
Check the compatibility with your motorcycle
FIND YOUR BIKE - compatibility table
The Big Bore cylinder kit of 290cc is specifically designed for the KTM EXC-F, offering a significant performance boost for riders seeking power and reliability. Made from high-quality aluminum, this kit is the result of over ten years of innovation and development, utilizing cutting-edge technologies that ensure precise machining and exceptional durability.
The advanced features of this cylinder include a bore of 80 mm and a stroke of 55 mm, contributing to a displacement of 276.46 cc. With a compression ratio of 13.5:1, the kit is capable of delivering a maximum power of 40.7 HP at 13,200 RPM and a torque of 25.8 Nm at 8,900 RPM, making it ideal for those who want to push their motorcycle to the limit.
Each cylinder is made with a special blend of silicon carbide and nickel, ensuring superior strength and extended piston life. The water channels are designed to optimize cooling capacity, while precision machining ensures micron tolerances at every stage of production. Additionally, the cylinder is tested at controlled internal temperatures to guarantee maximum reliability.
With a design that eliminates coupling inaccuracies, the Big Bore cylinder kit is the perfect choice for riders looking to enhance the performance of their KTM EXC-F, taking their riding experience to the next level.
- Bore: 80 mm
- Stroke: 55 mm
- Displacement: 276.46 cc
- Compression: 13.5:1
- Maximum power: 40.7 HP at 13,200 RPM
- Torque: 25.8 Nm at 8,900 RPM
- Material: blend of silicon carbide and nickel
- Optimized water channels for cooling
- Machining precision with micron tolerances
- Tested at controlled internal temperatures
- Design that eliminates coupling inaccuracies


