Vertex Complete Top End Kit - Casted Piston Cylinder kitRef : VER00534A / 1096679002

VERTEX Complete Top-End Kit (ref. VTK24370B) — Cast piston designed for maintenance of motocross engines. This kit gathers the essential components to replace the piston and sealing parts during a top-end overhaul, in order to restore a clean bore and consistent engine performance.

• cast piston
• rings
• piston pin
• circlips
• top-end gaskets
• needle bearing (for 2T applications)
• 4T kits include a timing chain

Main features:
Piston compression: Standard
Bore diameter: 47.50 mm
Piston diameter: Ø 47.46 mm (letter oversize B)
Material: Aluminum

Designed for off-road and motocross practice, this VERTEX kit is aimed at riders and mechanics looking for a complete solution for the top-end. The provided components allow for a clean replacement of the piston, rings, and assembly parts (pin and circlips), and include the needle bearing when the application is 2T. The 4T versions come with a timing chain.

Compatibility examples: YAMAHA YZ 85 (2025-2026 models, including LW Big Wheels versions). Check the reference VTK24370B and the bore dimensions before installation to ensure compatibility with your engine.