Piston Kit Gr. II (Size B) for KTM/Husqvarna/GasGas 250 2017-2023 - 55430007010 II

This genuine OEM Piston Kit Gr. II (Size B) is a comprehensive top-end rebuild solution designed for 250cc two-stroke engines. The kit includes a high-quality piston, rings, wrist pin, circlips, needle bearing, and a complete set of gaskets to ensure a perfect seal and optimal compression. Using original parts guarantees the precise tolerances required for high-performance TPI and carbureted engines.

This kit is compatible with a wide range of 250cc models from 2017 to 2023. It fits KTM 250 EXC, EXC TPI, SX, XC, and XC-W models. It is also designed for Husqvarna TC 250, TE 250, and TE 250i, as well as GasGas EC 250, EX 250, and MC 250 models. This includes specialized editions like the Six Days, Heritage, and TPI variants across all three brands.

The Gr. II (Size B) piston is specifically sized for cylinders that have seen some use, providing a slightly larger diameter than Size A to maintain the correct piston-to-wall clearance. The included gaskets are manufactured to withstand high thermal loads, preventing leaks and maintaining engine efficiency. This all-in-one kit simplifies maintenance by providing every necessary component for a top-end service in a single package.

For best results, always measure your cylinder bore before selecting a piston size to ensure the correct fitment. We recommend following the manufacturer's torque specifications and break-in procedures to maximize the lifespan of your new top end. Regular piston replacement is essential for preventing engine failure and maintaining peak power output.

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