Vertex Top End Piston Cylinder kitRef : VER00735A / 1149521001

VERTEX Top-End Kit designed for motocross riders seeking a clean and complete top-end repair. This kit includes all the necessary parts to replace the piston and wear components without the hassle of sourcing individual items: machined aluminum piston, rings, pin, circlips, and top-end gaskets. When properly installed, it restores the combustion chamber and bottom end to original configuration while minimizing downtime.

• Aluminum piston (piston diameter: 66.34 mm)
• Rings
• Piston pin
• Circlips
• Top-end gaskets
• Needle cage for 2T applications (included depending on model)
• Timing chain included for 4T kits (depending on application)

Technical specifications: standard piston compression, oversize letter A. Boring diameter indicated: 66.40 mm (piston reference Ø 66.34 mm) — choose the appropriate oversize for your cylinder when ordering.

Compatible with several recent 250 cc motocross models, including KTM 250 SX (2026), HUSQVARNA TE 250 (2026), and GAS GAS MC 250 (2026). Manufacturer reference: VTK23630A-3.

A kit designed for durability and to facilitate intervention in the garage or at the track: fewer missing parts, simplified assembly, and streamlined maintenance for your motocross machine.