
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:
Essential technical specifications:
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.