VERTEX - PISTON KIT - STD BORE/COMP - YAMAHA 14-17 YZ450F / 16-18 YZ450FX / WR450F

• 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

14-17 YZ450F

16-18 YZ450FX

16-18 WR450F

Specs:

Compression Ratio: 12.5:1

Cylinder Diameter: 97.00mm

Piston Diameter: Size A 96.93mm, Size B 96.94

Mfg Part#

23958A Size A

23958B Size B