PROX 01.6348.A Forged Piston Kit, 80.96 mm Standard Size for KTM 250 SX-F and Husqvarna FC 250

The PROX 01.6348.A Forged Piston Kit is a direct-replacement engine component designed for select KTM and Husqvarna 250cc four-stroke motocross and cross-country motorcycles with Nikasil-plated cylinders. Built as an alternative to OEM pricing, this standard-size piston kit helps restore proper engine performance and supports dependable service during engine rebuilding or top-end maintenance.

This complete PROX piston kit includes the forged piston, piston rings, wrist pin, and retaining clips. The 80.96 mm standard-size piston is engineered for compatible original-equipment cylinder specifications and is intended to interchange directly with the applicable OEM piston assembly. Always inspect the cylinder, piston clearance, rings, wrist pin, and related components before installation, and follow the motorcycle manufacturer's service procedures for proper fitting and break-in.

Fitment includes the 2023 and 2024 KTM 250 SX-F, 2023 and 2024 KTM 250 XC-F, 2025 KTM 250 XC-F, and the 2023 and 2024 Husqvarna FC 250. Verify model year, cylinder condition, and required piston size before ordering. Manufactured by PROX, this kit is identified by manufacturer part number 01.6348.A and is supplied for professional-quality engine service and replacement applications.

Features:

• Value: Provides an economical alternative to comparable OEM piston kits.
• Direct Interchange: Designed to replace the applicable OEM piston assembly.
• Complete Kit: Includes forged piston, rings, wrist pin, and retaining clips.
• Piston Size: 80.96 mm standard-size piston for compatible Nikasil-plated cylinders.
• Fitment: Fits 2023-2024 KTM 250 SX-F, 2023-2025 KTM 250 XC-F, and 2023-2024 Husqvarna FC 250.
• Brand and Part Number: PROX manufacturer part number 01.6348.A.