PROX Forged Piston - Manufacturer Ref: 01.6434.B

Designed for Cross and Roadster engines, this PROX forged piston is machined to fit oversized bore rework. Made from aluminum, it meets the thermal and mechanical demands of high-performance displacements without promising unverified effects. Its forged design offers a more homogeneous structure than cast parts, making it suitable for demanding uses and high RPMs.

• Compression: Standard
• Diameter: Ø 94.96 mm (oversize letter B)
• Material: Aluminum
• Delivered: Ring kit

This piston is compatible with several popular 450 cm3 models in enduro and MX, including GAS GAS MC 450 F (2023), KTM 450 SX-F (2022), and HUSQVARNA FS 450 (2022). Ideal for setups requiring an oversize B, it integrates into a piston/ring/pin assembly to restore cylinder geometry after reboring.

Before installation, check the bore dimensions, compatibility with your connecting rods, and adhere to manufacturer tolerances during break-in. This product is intended for motorcyclists, mechanics, and preparers looking for a robust part that conforms to the specified dimensions.