Vertex Complete Top End Kit - Casted Piston Cylinder kitRef : VER00403A / 1121198005

VERTEX - Complete Top-End Kit (ref. VTK23928E-4)

Designed for motocross purists who want to renew their top-end without searching for parts one by one. This VERTEX kit includes the piston and necessary peripherals for a clean and quick replacement, minimizing trips to the workshop. Its cast aluminum piston, with standard compression, fits a bore of 54.00 mm with a piston diameter of Ø 53.980 mm (oversize EF).

Kit contents:

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

Essential technical specifications:

• Piston compression: Standard
• Recommended bore diameter: 54.00 mm
• Piston diameter: 53.98 mm (oversize letter EF)
• Material: Aluminum

Main applications: Motocross universe — compatible with recent 125 cc models such as KTM 125 SX (2025), HUSQVARNA TC 125 (2025), and GAS GAS MC 125 (2025). Manufacturer reference: VTK23928E-4. A practical choice for a serious top-end rebuild, with ready-to-install components for track sessions or training.