Piston Kit Gr. II (Size B) for KTM/Husqvarna/GasGas 300 17-23 - 55630307110 II

This complete OEM top-end piston kit is designed to restore the performance and reliability of your 300cc two-stroke engine. The kit includes a high-quality piston, rings, wrist pin, circlips, needle bearing, and all necessary gaskets for a comprehensive top-end rebuild. Using genuine parts ensures precise tolerances and optimal heat dissipation for long-lasting engine life.

This kit is compatible with a wide range of 300cc models from 2017 to 2023. It fits KTM 300 EXC, EXC TPI, EXC Six Days, XC, XC TPI, XC-W, XC-W TPI, and Erzbergrodeo editions. It is also designed for Husqvarna TE 300, TE 300i, TX 300, TX 300i, Rockstar Edition, Heritage, and Jarvis Edition models. Additionally, it fits GasGas EC 300 and EX 300 models from 2021-2023.

This is a Group II (Size B) piston kit, which is typically used for cylinders that require a slightly larger diameter to maintain perfect compression after initial wear. Replacing your piston at recommended service intervals prevents catastrophic engine failure and maintains the crisp throttle response expected from a high-performance machine.

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