CYLINDER FULL KIT 54MM YAMAHA YZ 125 97-04, ATHENA P400485100003 STD BORE, (Piston Included)

Athena Standard Bore Cylinder Kit 54mm 125cc

This Athena Standard Bore Cylinder Kit is engineered for optimal performance and reliability. Manufactured in Italy by Athena's expert R&D department, this kit features a lightweight aluminum cylinder coated with motor-nicksil, a proprietary nickel-silicon coating developed for exceptional smoothness and wear resistance. The included piston is designed to minimize friction, further enhancing efficiency.

This comprehensive kit includes a high-quality aluminum cylinder with a standard bore, a cylinder head with an interchangeable central dome, a complete piston assembly with pin and rings, and all necessary gaskets. Engineered to withstand extreme temperatures, pressures, and stresses, each component has undergone rigorous bench and road testing by Athena technicians.

The Athena Standard Bore Cylinder Kit is designed to deliver performance comparable to original spare parts, ensuring excellent reliability and smoothness. Installation requires no modifications to the engine crankcase.

Key Features:

• Standard Bore Diameter: 54.00 mm
• Displacement: 125 cc
• Compression Ratio: 14.8:1
• Motor-nicksil coating for durability and smoothness
• Lightweight aluminum construction
• Piston designed for reduced friction
• Includes cylinder head, piston kit, and all required gaskets
• No engine crankcase modifications needed for installation

Technical Specifications:

• Bore Diameter: 54.00 mm
• Compression Ratio: 14.8:1
• Displacement: 125 cc
• Net Weight: 1.50 kg