VERTEX - PISTON KIT - BETA 390 RR/RR RACE/X-PRO 20-26

• 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.

Replacement pistons for Beta 390 RR/RR Race/X-Pro 20-26

Specs:

Compression Ratio: 12.48:1 (Stock)

Cylinder Diameter: 88.000mm

Piston Diameter: Size A 87.960mm, Size B 87.970

Mfg Part#

24387A Size A

24387B Size B