VERTEX Cast Replica Piston Kit built as an OE-form replacement for 125cc 2-stroke engines. Heat treated (T-5) and finished with a moly-coated skirt for faster break-in and longer service life.
The VERTEX Cast Replica Piston Kit is designed as a dependable OE-form replacement piston for 125cc 2-stroke engines, delivering consistent fit and performance when it’s time for a top-end refresh. With T-5 heat treatment and a high-tech molybdenum disulphide skirt coating, it helps reduce friction for faster break-in and improved piston longevity.
If your engine is losing compression or you’re rebuilding to restore crisp throttle response and reliability, this kit provides a strong, lightweight gravity-cast aluminum piston with OEM-style rings—ideal for bringing your bike back to proper running condition.