Piston Kit Gr. II (Size B) for KTM/Husqvarna/GasGas 125 2023-2026 - A42030007010 II

This Piston Kit Group II is a comprehensive OEM engine component designed for high-performance 125cc two-stroke engines. It includes the piston, rings, wrist pin, circlips, needle bearing, and a complete set of top-end gaskets to ensure a perfect seal. As an original equipment manufacturer part, it guarantees precise fitment and restores your engine's compression and power to factory specifications.

This kit is compatible with a wide range of 125cc models from 2023 to 2026. It fits the KTM 125 SX, 125 XC, and 125 XC-W; Husqvarna TC 125, TC 125 Heritage, and TE 125; as well as the GasGas MC 125 and EC 125. Please verify your specific model year, as this kit covers the latest generation of 125cc platforms.

The Group II (Size II) piston is specifically sized for cylinders that have experienced minor wear or require a slightly larger diameter for optimal clearance. The high-quality aluminum alloy construction provides excellent heat dissipation and durability under racing conditions. The included gaskets are manufactured to withstand high temperatures and pressures, preventing leaks and maintaining engine integrity.

For best results, we recommend professional installation and a proper break-in period to ensure the longevity of the new components. Always clean the cylinder bore thoroughly and check for any scoring before installing the new piston. Replacing the top-end regularly is essential maintenance for two-stroke motorcycles to prevent engine failure.

Check compatibility list below to see if this part fits your motorcycle model.