Vertex Top End Piston Cylinder kitRef : VER00736A / 1149521002

The VERTEX VTK23630B-3 top-end kit is designed for a complete and quick replacement of the piston assembly on motocross machines. This high-end kit includes all the necessary parts to perform the job without multiple orders: piston, rings, pin, circlips, and top-end gaskets are provided, along with the needle cage for 2T applications. The 4T versions additionally include a timing chain.

• Included: piston, rings, piston pin, circlips, top-end gaskets, needle cage (2T) / timing chain (4T)
• Manufacturer reference: VTK23630B-3

Technical specifications:

• Piston compression: Standard
• Bore diameter: 66.40 mm
• Piston diameter: Ø 66.35 mm
• Oversize letter: B
• Material: Aluminum

Suitable for motocross environments, this kit simplifies top-end servicing by grouping common wear parts for time savings in the workshop. Compatible with several modern 250 cm3 models, including: KTM 250 SX (2026), HUSQVARNA TE 250 (2026), and GAS GAS MC 250 (2026). Perfect for mechanics and riders who want to restore the heart of the engine with original VERTEX components.