ATHENA P400485100017 Cylinder Kit 125cc for Yamaha YZ 125

The 125cc cylinder kit is specifically designed for the Yamaha YZ 125, offering high performance and reliability. Made from high-quality aluminum alloys, this cylinder is the result of over ten years of technological innovation, ensuring state-of-the-art production. Each cylinder is coated with a nickel-silicon alloy, providing superior wear resistance and extended durability.

Thanks to a manufacturing process that utilizes CNC machines, tolerances are maintained to one thousandth of a millimeter, allowing for precise and error-free assembly. The water channels have been optimized to improve cooling capacity, while the cylinder sleeves, made from a special blend of silicone carbide and nickel, ensure optimal piston performance.

With a bore of 54 mm and a stroke of 54.5 mm, this cylinder offers a displacement of 124.82 cc and a compression ratio of 14.8:1, achieving a maximum power of 34 HP at 11,000 RPM. The cylinder head is included in the supply, and the two-piece exhaust design contributes to more efficient exhaust gas management.

Each cylinder undergoes rigorous quality control, ensuring that it meets the highest standards in terms of performance and reliability. This kit is the ideal choice for those looking to maximize the performance of their Yamaha YZ 125, both on the road and on the track.

• Bore: 54 mm
• Stroke: 54.5 mm
• Displacement: 124.82 cc
• Compression ratio: 14.8:1
• Maximum power: 34 HP at 11,000 RPM
• Material: high-quality aluminum alloys
• Coating: nickel-silicon alloy
• Tolerances: maintained to one thousandth of a millimeter
• Optimized water channels for cooling
• Cylinder sleeves made of silicone carbide and nickel
• Cylinder head included
• Two-piece exhaust design
• Rigorous quality controls