Yamaha YZ 250 F (CG 39) [2017-2018] - forged pistons

VERTEX forged pistons for Yamaha YZ 250 F (CG 39)

The VERTEX forged piston is intended for the Yamaha YZ 250 F (CG 39) built in 2017-2018. As a forged precision piston made of aluminum, it combines a defined design with the specified dimensions for selecting a suitable replacement part in the upper engine range.

Execution and function

The high-compression piston design is tailored to the 4T engine of the Yamaha mentioned. The piston is made of aluminum and has a diameter of 76.96 mm. The oversize marking is B; In addition, the oversize is given as +0.01.

Technical data

• Brand: VERTEX
• Piston type: forged
• Material: aluminum
• Piston compression: highly compressed
• Diameter Ø: 76.96 mm
• Letter oversize: B
• Oversize: +0.01
• Bore diameter: 77.00 mm
• Piston rings: set
• Stroke: 4T

Vehicle assignment

The forged piston fits the Yamaha YZ 250 F (CG 39), built between 2017 and 2018. When selecting parts, the specified piston diameter, the bore diameter and the oversize marking B and +0.01 must be taken into account in particular.

VERTEX specializes in the production of engine components for off-road machines. The brand is used as an original equipment manufacturer by numerous motorcycle manufacturers and teams in the MX World Championship.