The VERTEX VTK24352B top-end kit is designed to refurbish the upper part of the engine block for motocross machines. Ideal for YZ 65, it allows for the replacement of the cylinder and piston to restore the original bore and a combustion chamber geometry that complies with manufacturer specifications.

Technical specifications

• Piston compression: Standard
• Cylinder diameter: 43.500 mm
• Piston diameter: 43.460 mm (Ø 43.46)
• Displacement: 65 cc
• Material: aluminum
• Piston type: cast (cast piston)
• Manufacturer reference: VTK24352B

Compatible with models: YZ 65 (18,20-24). Suitable for motocross use, this kit allows for a clean and precise replacement of the top-end to restore optimal operating conditions after wear. Its aluminum design ensures a good balance of weight and strength, and the cast piston provides a robust solution for off-road riding.

Frequently compatible motorcycles:

• YAMAHA YZ 65 (2026 - 65 cc)
• YAMAHA YZ 65 (2025 - 65 cc)
• YAMAHA YZ 65 (2024 - 65 cc)