VERTEX - PISTON KIT - PRO BIG BORE (+2MM/470CC) - YAMAHA 20-22 YZ450F / 21-23 YZ450FX / 21-23 WR450F | FANTIC 22-25 XEF/XXF 450

• Manufactured in Italy, Vertex offers state of the art quality pistons.
• Manufactured to the highest standards in Japan, Vertex piston rings are direct OEM replacements.
• All Vertex piston kits include the piston, rings, wrist pin and circlips; and every Vertex piston has a Molybdenum Disulphide coating on the piston skirt.
• Vertex 2-stroke pistons are cast aluminum with 18% silicon content. This decreases thermal expansion, creates better power and decreases wear.
• 4-stroke pistons are forged from the highest quality aluminum alloy for superior strength and durability.

Fits the following models:

Yamaha

20-22 YZ450F

21-23 YZ450FX

21-23 WR450F

Fantic

22-25 XEF 450

22-25 XXF 450

Specs:

Compression Ratio: 12:80:1

Cylinder Diameter: 99.000mm

Piston Diameter: Size A 98.950mm, Size B 98.960