YAMAHA YZ 250 FX [2019-2024] - Forged pistons

PROX forged pistons for YAMAHA YZ 250 FX 2019-2024

The PROX forged piston is designed for the YAMAHA YZ 250 FX built between 2019 and 2024. Its aluminum construction combines the forged piston design with a standard compression and a 4T design specified for this engine.

The specific aluminum alloy used is designed to reduce friction and promote reliability. The design in OEM-equivalent quality is based on the technical requirements of the original standard.

Technical features

• Material: aluminum
• Piston Type: Forged
• Piston compression: standard
• Diameter Ø: 76.96 mm
• Letter oversize: B
• Oversize: +0.01
• Rings Quantity: Set
• Stroke: 4T

Piston shape

The flat crown with raised top and 4 valve pockets describes the specific shape of this piston. This means that the design can be clearly classified when selecting based on the existing motor configuration and the dimensional data mentioned.

Vehicle assignment

The forged piston is intended for the YAMAHA YZ 250 FX, built between 2019 and 2024. The vehicle assignment refers to this entire year of construction.

Selection note

When making the selection, the diameter of 76.96 mm, the oversize letter B, the oversize specification +0.01 and the standard compression must be taken into account in particular.