Vertex PRO Full forged Size A Piston kitRef : 9486DA / 1095197001

VERTEX Forged Piston – Manufacturer Ref. 22889A

Forged aluminium piston designed for demanding motocross engines. With a forged design and geometry tailored for high RPMs, this VERTEX piston offers a robust construction suitable for repeated load cycles and terrain stresses. Its meticulous finish facilitates fitting in the cylinder and maintaining thermal clearances.

• Compression: High compression
• Bore diameter: 77.00 mm
• Piston diameter: Ø 76.940 mm (oversize A)
• Material: Forged aluminium
• Oversize letter: A
• Replacement segments: 274460

This piston is intended for 250 cm³ motocross and enduro bikes where a robust assembly part is required: the segment, skirt, and piston head meet machining tolerances specific to competition and off-road use. Ideal for high-performance engine operations where bore precision and material quality are essential.

Main compatibilities (examples):

• YAMAHA WR 250 F (CG30) – 2014
• YAMAHA YZ 250 F (CG27) – 2007
• YAMAHA WR 250 F (CG26) – 2007

Manufacturer reference: 22889A. Always check the bore and oversize letter on your engine before installation.