The ProX Forged Piston Kit, part number 01.6348.B, is designed for select KTM and Husqvarna 250cc four-stroke motocross and cross-country motorcycles. Built for use with Nikasil-plated cylinders, this piston kit provides a direct replacement option for riders and technicians seeking dependable performance without the higher cost of OEM components.
Manufactured by ProX, the kit includes a forged piston, piston rings, wrist pin, and retaining clips for a complete piston replacement. The 80.97 mm piston size with a +0.01 mm specification is engineered for accurate fitment and reliable operation when installed according to the motorcycle manufacturer’s service procedures. Always verify cylinder condition, clearance requirements, and application details before installation.
This ProX piston kit fits the 2023 and 2024 KTM 250 SX-F, 2023 and 2024 KTM 250 XC-F, 2025 KTM 250 XC-F, and 2023 and 2024 Husqvarna FC 250. It interchanges directly with applicable OEM parts, helping simplify replacement and maintenance during an engine rebuild. The manufacturer part number is 01.6348.B, and the vendor part number is 19-6348B.
Features:
- Cost-effective alternative to applicable OEM piston components
- Direct interchange with compatible OEM parts
- Complete forged piston kit includes piston, rings, wrist pin, and retaining clips
- 80.97 mm piston size with +0.01 mm specification
- Designed for Nikasil-plated cylinders
- Fits 2023 and 2024 Husqvarna FC 250
- Fits 2023 and 2024 KTM 250 SX-F
- Fits 2023, 2024, and 2025 KTM 250 XC-F
Fitment:
2023 Husqvarna FC 250
2023 KTM 250 SX-F
2023 KTM 250 XC-F
2024 Husqvarna FC 250
2024 KTM 250 SX-F
2024 KTM 250 XC-F
2025 KTM 250 XC-F