KTM | SKU: A45030007210 II | Check Compatibility
Piston Kit Gr. II (Size B) for KTM 300 EXC/SX/XC 2026-2027 - A45030007210 II
Shipping and Availability
Shipping and Availability
We maintain up-to-date stock. If labeled 'In stock Fast Shipping' expect shipment to be sent within 1 working day.
Shipping from Europe typically takes 3-5 working days anywhere in the world.
Note that non-EU countries may have customs duties and added taxes in accordance with local laws.
Description
Description
This genuine OEM Piston Kit Gr. II (Size B) is a complete top-end refresh solution designed to restore peak performance and compression to your engine. The kit includes a high-quality piston, piston rings, wrist pin, circlips, and a variety of base gaskets to ensure the perfect deck height and squish clearance.
This kit is compatible with a wide range of 300cc models, including the 2026-2027 KTM 300 EXC, 300 EXC 6DAYS, 300 SX, 300 XC, 300 XC-W, and 300 EXC HARDENDURO. It also fits the 2026-2027 Husqvarna TC 300, TE 300, TE 300 IKD, and TE 300 PRO, as well as the 2026-2027 GasGas EC 300 and EX 300.
As a Group II (Size B) piston, this component is precision-engineered for cylinders that require a slightly larger diameter than the standard Size A. Using genuine parts ensures optimal heat dissipation and longevity compared to aftermarket alternatives.
Professional installation is recommended to verify cylinder tolerances and ensure proper break-in. Always replace your gaskets and seals during a top-end rebuild to prevent leaks and maintain engine integrity.
Check compatibility list below to see if this part fits your motorcycle model.