ATHENA Cylinder Kit - KX65 - 50mm P400250100007

If you're pushing your KX65 to its limits, a worn or compromised cylinder is a bottleneck you can't afford. The ATHENA Cylinder Kit delivers measurable gains in compression consistency and heat dissipation, translating directly to more responsive throttle feel and sustained power delivery across the entire RPM range. This is a straightforward bolt-on upgrade that pays dividends whether you're chasing lap times or maximizing durability on the track.

What sets this kit apart is the engineering—nickel-carbide coating on the aluminum cylinder resists wear and maintains bore integrity, while the forged piston with molybdenum coating handles the thermal stress of high-RPM operation. The oversized water jackets pull heat away from critical zones, keeping temperatures stable under sustained load. Installation requires no machine work; everything bolts together with the included gasket set and detailed instructions.

• 50mm bore cylinder
• Aluminum construction
• Nickel-carbide coating
• Enlarged water jackets
• Forged piston included
• Molybdenum piston coating
• Complete gasket kit
• Bolt-on installation
• No machining required
• Step-by-step instructions
• MPN: P400250100007