PROX conecting rod FC 250 '23-'27

The PROX conecting rod FC 250 '23-'27 connecting rod kit is a complete OEM-style replacement kit for press-together crankshafts on Husqvarna/KTM/GasGas 250cc four-stroke engines, matched here to FC 250 2023–2027 applications. Supplied as ProX part number 03.6343, it is intended for engine rebuilds on modern off-road and motocross 250F platforms.

Technical specifications

• Kit type: Complete connecting rod kit for press-fit crankshaft
• Manufacturer part number: 03.6343
• Fitment: Husqvarna FC 250 2023–2026
• Fitment: KTM 250 SX-F 2023–2026
• Fitment: KTM 250 XC-F 2023–2026
• Fitment: KTM 250 EXC-F 2024–2026
• Fitment: GasGas MC 250F 2024–2025; EX 250F 2024–2025; EC 250F 2024–2025
• Engine type: Off-road / motocross 250cc four-stroke KTM/Husqvarna/GasGas 250F platform

Use and service context

This connecting rod kit is typically installed during a full bottom-end rebuild when the big-end bearing shows play, discoloration, or noise, or when servicing high-hour 250F engines as preventative maintenance. It is commonly replaced together with crankshaft main bearings, piston, and piston rings to reset service hours on the entire rotating assembly.

Installation notes

Installation requires crankshaft disassembly with a suitable press, trueing the crank to specification, and reassembly using correct factory service manual torque values and runout tolerances.