ProX Piston Kit KTM250SX-F '23 + FC250 '23 14.5:1 (80.97mm)

Get more power, better throttle response, and a higher top-end from your engine with the ProX Piston Kit 14.5:1 for the KTM 250SX-F 2023-2025 and Husqvarna FC250 2023-2025. This is a premium high-compression piston kit in standard bore size (80.97 mm) that fits perfectly on the latest generation of 250cc four-stroke motocross engines.

ProX Racing Parts has been delivering top-quality pistons with an excellent price-to-performance ratio for years. This kit is crafted from high-grade forged aluminum with a specialized skirt coating to reduce friction, improve heat dissipation, and extend service life. The 14.5:1 compression ratio (higher than stock) delivers noticeable power gains, quicker throttle response, and more corner-exit punch – ideal for both competitive riders and riders looking for that extra bit of performance without a full engine overhaul.

The piston features a flat crown with a raised top for optimized combustion, and comes with high-quality piston rings, a steel piston pin, and circlips. Everything is ready to install, precision-made to exact specifications, and a direct bolt-in replacement.