Complete VERTEX top-end kit designed for motocross riders looking for a clean and quick engine block repair. This kit with a cast piston includes all the necessary parts to replace the piston and top-end seals, reducing trips to the workshop and disassembly time.
- cast piston
- rings
- piston pin
- circlips
- top-end gaskets
- needle bearing (for 2T applications)
- 4T versions include a timing chain
Technical specifications:
- Piston compression: Standard
- Bore diameter: 47.50 mm
- Piston diameter: Ø 47.480 mm (noted Ø 47.48 mm)
- Oversize letter: D
- Material: Aluminum
Designed for motocross use, this VERTEX kit simplifies the restoration of the top-end while maintaining the original settings (standard compression). Compatible with the models specified such as YAMAHA YZ 85 (notably the LW Big Wheels 19/16 and 2025-2026 listed versions). Manufacturer reference: VTK24370D.